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This acid works to dissolve rock .
TQA:T_0879_3
2
works
true
work
[ "why", "does", "something", "work", "_", "_", "_", "?" ]
[ "to dissolve rock" ]
[ [ 3, 6 ] ]
This acid works to dissolve rock .
TQA:T_0879_3
4
dissolve
true
dissolve
[ "what", "_", "_", "dissolves", "something", "_", "_", "?" ]
[ "This acid", "acid" ]
[ [ 0, 2 ], [ 1, 2 ] ]
This acid works to dissolve rock .
TQA:T_0879_3
4
dissolve
true
dissolve
[ "what", "does", "something", "dissolve", "_", "_", "_", "?" ]
[ "rock" ]
[ [ 5, 6 ] ]
It eats away at sculptures and monuments .
TQA:T_0879_4
1
eats
true
eat
[ "what", "does", "something", "eat", "_", "_", "_", "?" ]
[ "sculptures and monuments", "away at sculptures and monuments" ]
[ [ 4, 7 ], [ 2, 7 ] ]
It eats away at sculptures and monuments .
TQA:T_0879_4
1
eats
true
eat
[ "what", "_", "_", "eats", "_", "_", "_", "?" ]
[ "It" ]
[ [ 0, 1 ] ]
While this is normal , more acids are made when we add pollutants to the air .
TQA:T_0879_5
8
made
true
make
[ "what", "is", "_", "made", "_", "_", "_", "?" ]
[ "acids", "more acids" ]
[ [ 6, 7 ], [ 5, 7 ] ]
While this is normal , more acids are made when we add pollutants to the air .
TQA:T_0879_5
8
made
true
make
[ "when", "is", "something", "made", "_", "_", "_", "?" ]
[ "when we add pollutants to the air", "we add pollutants to the air" ]
[ [ 9, 16 ], [ 10, 16 ] ]
While this is normal , more acids are made when we add pollutants to the air .
TQA:T_0879_5
11
add
true
add
[ "what", "is", "_", "added", "_", "to", "something", "?" ]
[ "pollutants" ]
[ [ 12, 13 ] ]
While this is normal , more acids are made when we add pollutants to the air .
TQA:T_0879_5
11
add
true
add
[ "what", "is", "something", "added", "_", "to", "_", "?" ]
[ "to the air", "the air" ]
[ [ 13, 16 ], [ 14, 16 ] ]
While this is normal , more acids are made when we add pollutants to the air .
TQA:T_0879_5
11
add
true
add
[ "who", "_", "_", "adds", "something", "to", "something", "?" ]
[ "we" ]
[ [ 10, 11 ] ]
Any time we burn any fossil fuel , it adds nitrous oxide to the air .
TQA:T_0879_6
3
burn
true
burn
[ "what", "does", "someone", "burn", "_", "_", "_", "?" ]
[ "any fossil fuel", "fossil fuel" ]
[ [ 4, 7 ], [ 5, 7 ] ]
Any time we burn any fossil fuel , it adds nitrous oxide to the air .
TQA:T_0879_6
3
burn
true
burn
[ "who", "_", "_", "burns", "something", "_", "_", "?" ]
[ "we" ]
[ [ 2, 3 ] ]
Any time we burn any fossil fuel , it adds nitrous oxide to the air .
TQA:T_0879_6
9
adds
true
add
[ "what", "_", "_", "adds", "something", "_", "_", "?" ]
[ "it", "any fossil fuel", "fossil fuel" ]
[ [ 8, 9 ], [ 4, 7 ], [ 5, 7 ] ]
Any time we burn any fossil fuel , it adds nitrous oxide to the air .
TQA:T_0879_6
9
adds
true
add
[ "what", "does", "something", "add", "_", "_", "_", "?" ]
[ "nitrous oxide" ]
[ [ 10, 12 ] ]
Any time we burn any fossil fuel , it adds nitrous oxide to the air .
TQA:T_0879_6
9
adds
true
add
[ "when", "does", "something", "add", "something", "_", "_", "?" ]
[ "Any time we burn any fossil fuel", "Any time we burn" ]
[ [ 0, 7 ], [ 0, 4 ] ]
Any time we burn any fossil fuel , it adds nitrous oxide to the air .
TQA:T_0879_6
9
adds
true
add
[ "where", "does", "something", "add", "something", "_", "_", "?" ]
[ "to the air" ]
[ [ 12, 15 ] ]
When we burn coal rich in sulfur , it adds sulfur dioxide to the air .
TQA:T_0879_7
2
burn
true
burn
[ "what", "does", "someone", "burn", "_", "_", "_", "?" ]
[ "coal rich in sulfur", "coal" ]
[ [ 3, 7 ], [ 3, 4 ] ]
When we burn coal rich in sulfur , it adds sulfur dioxide to the air .
TQA:T_0879_7
2
burn
true
burn
[ "who", "_", "_", "burns", "something", "_", "_", "?" ]
[ "we" ]
[ [ 1, 2 ] ]
When we burn coal rich in sulfur , it adds sulfur dioxide to the air .
TQA:T_0879_7
9
adds
true
add
[ "what", "_", "_", "adds", "something", "_", "_", "?" ]
[ "it" ]
[ [ 8, 9 ] ]
When we burn coal rich in sulfur , it adds sulfur dioxide to the air .
TQA:T_0879_7
9
adds
true
add
[ "what", "is", "_", "added", "_", "to", "something", "?" ]
[ "sulfur dioxide" ]
[ [ 10, 12 ] ]
When we burn coal rich in sulfur , it adds sulfur dioxide to the air .
TQA:T_0879_7
9
adds
true
add
[ "when", "is", "something", "added", "_", "to", "something", "?" ]
[ "When we burn coal rich in sulfur", "we burn coal" ]
[ [ 0, 7 ], [ 1, 4 ] ]
When we burn coal rich in sulfur , it adds sulfur dioxide to the air .
TQA:T_0879_7
9
adds
true
add
[ "where", "is", "something", "added", "_", "_", "_", "?" ]
[ "to the air" ]
[ [ 12, 15 ] ]
As nitrous oxide and sulfur dioxide react with water , they form nitric acid and sulfuric acid .
TQA:T_0879_8
6
react
true
react
[ "what", "does", "something", "react", "_", "with", "_", "?" ]
[ "water" ]
[ [ 8, 9 ] ]
As nitrous oxide and sulfur dioxide react with water , they form nitric acid and sulfuric acid .
TQA:T_0879_8
6
react
true
react
[ "what", "_", "_", "reacts", "_", "with", "something", "?" ]
[ "nitrous oxide and sulfur dioxide", "sulfur dioxide", "nitrous oxide" ]
[ [ 1, 6 ], [ 4, 6 ], [ 1, 3 ] ]
As nitrous oxide and sulfur dioxide react with water , they form nitric acid and sulfuric acid .
TQA:T_0879_8
11
form
true
form
[ "what", "_", "_", "forms", "something", "_", "_", "?" ]
[ "they", "sulfur dioxide", "water", "nitrous oxide and sulfur dioxide", "nitrous oxide" ]
[ [ 10, 11 ], [ 4, 6 ], [ 8, 9 ], [ 1, 6 ], [ 1, 3 ] ]
As nitrous oxide and sulfur dioxide react with water , they form nitric acid and sulfuric acid .
TQA:T_0879_8
11
form
true
form
[ "what", "is", "_", "formed", "_", "_", "_", "?" ]
[ "nitric acid and sulfuric acid" ]
[ [ 12, 17 ] ]
As nitrous oxide and sulfur dioxide react with water , they form nitric acid and sulfuric acid .
TQA:T_0879_8
11
form
true
form
[ "why", "does", "something", "form", "_", "_", "_", "?" ]
[ "sulfuric acid", "nitrous oxide and sulfur dioxide react with water", "nitric acid" ]
[ [ 15, 17 ], [ 1, 9 ], [ 12, 14 ] ]
Oxygen strongly reacts with elements at the Earths surface .
TQA:T_0880_0
2
reacts
true
react
[ "what", "does", "something", "react", "_", "with", "_", "?" ]
[ "elements at the Earths surface", "with elements at the Earths surface" ]
[ [ 4, 9 ], [ 3, 9 ] ]
Oxygen strongly reacts with elements at the Earths surface .
TQA:T_0880_0
2
reacts
true
react
[ "what", "_", "_", "reacts", "_", "with", "something", "?" ]
[ "Oxygen" ]
[ [ 0, 1 ] ]
You are probably most familiar with the rust that forms when iron reacts with oxygen -LRB- Figure 9.4 -RRB- .
TQA:T_0880_1
9
forms
true
form
[ "what", "_", "_", "forms", "_", "_", "_", "?" ]
[ "the rust", "rust" ]
[ [ 6, 8 ], [ 7, 8 ] ]
You are probably most familiar with the rust that forms when iron reacts with oxygen -LRB- Figure 9.4 -RRB- .
TQA:T_0880_1
9
forms
true
form
[ "when", "does", "something", "form", "_", "_", "_", "?" ]
[ "when iron reacts with oxygen" ]
[ [ 10, 15 ] ]
You are probably most familiar with the rust that forms when iron reacts with oxygen -LRB- Figure 9.4 -RRB- .
TQA:T_0880_1
12
reacts
true
react
[ "what", "does", "something", "react", "_", "with", "_", "?" ]
[ "oxygen" ]
[ [ 14, 15 ] ]
You are probably most familiar with the rust that forms when iron reacts with oxygen -LRB- Figure 9.4 -RRB- .
TQA:T_0880_1
12
reacts
true
react
[ "what", "_", "_", "reacts", "_", "with", "something", "?" ]
[ "iron" ]
[ [ 11, 12 ] ]
They break down as the iron changes into iron oxide .
TQA:T_0880_3
1
break
true
break
[ "how", "can", "something", "break", "_", "_", "_", "?" ]
[ "down", "as the iron changes into iron oxide ." ]
[ [ 2, 3 ], [ 3, 11 ] ]
They break down as the iron changes into iron oxide .
TQA:T_0880_3
1
break
true
break
[ "what", "can", "_", "break", "_", "_", "_", "?" ]
[ "They", "They break down" ]
[ [ 0, 1 ], [ 0, 3 ] ]
This makes the red color in soils .
TQA:T_0880_4
1
makes
true
make
[ "what", "_", "_", "makes", "something", "_", "_", "?" ]
[ "This" ]
[ [ 0, 1 ] ]
This makes the red color in soils .
TQA:T_0880_4
1
makes
true
make
[ "when", "does", "something", "make", "something", "_", "_", "?" ]
[ "the red color in soils" ]
[ [ 2, 7 ] ]
Plants and animals also cause chemical weathering .
TQA:T_0880_5
4
cause
true
cause
[ "what", "_", "_", "causes", "something", "_", "_", "?" ]
[ "animals", "Plants and animals", "Plants" ]
[ [ 2, 3 ], [ 0, 3 ], [ 0, 1 ] ]
Plants and animals also cause chemical weathering .
TQA:T_0880_5
4
cause
true
cause
[ "what", "does", "something", "cause", "_", "_", "_", "?" ]
[ "chemical weathering" ]
[ [ 5, 7 ] ]
Plants and animals also cause chemical weathering .
TQA:T_0880_5
6
weathering
true
weather
[ "how", "is", "something", "weathered", "_", "_", "_", "?" ]
[ "Plants and animals", "chemical" ]
[ [ 0, 3 ], [ 5, 6 ] ]
As plant roots take in nutrients , elements are exchanged .
TQA:T_0880_6
3
take
true
take
[ "what", "does", "something", "take", "_", "in", "_", "?" ]
[ "plant roots", "nutrients" ]
[ [ 1, 3 ], [ 5, 6 ] ]
As plant roots take in nutrients , elements are exchanged .
TQA:T_0880_6
3
take
true
take
[ "what", "_", "_", "takes", "something", "in", "_", "?" ]
[ "plant roots", "nutrients" ]
[ [ 1, 3 ], [ 5, 6 ] ]
As plant roots take in nutrients , elements are exchanged .
TQA:T_0880_6
9
exchanged
true
exchange
[ "what", "is", "_", "exchanged", "_", "_", "_", "?" ]
[ "elements" ]
[ [ 7, 8 ] ]
As plant roots take in nutrients , elements are exchanged .
TQA:T_0880_6
9
exchanged
true
exchange
[ "when", "is", "something", "exchanged", "_", "_", "_", "?" ]
[ "As plant roots take in nutrients" ]
[ [ 0, 6 ] ]
Certain types of rock are very resistant to weathering .
TQA:T_0881_1
8
weathering
true
weather
[ "what", "is", "_", "weathering", "_", "_", "_", "?" ]
[ "Certain types of rock", "rock" ]
[ [ 0, 4 ], [ 3, 4 ] ]
The resistant center of the volcano remains behind .
TQA:T_0881_10
6
remains
true
remain
[ "what", "_", "_", "remains", "_", "behind", "_", "?" ]
[ "center", "The resistant center of the volcano" ]
[ [ 2, 3 ], [ 0, 6 ] ]
Minerals also weather differently .
TQA:T_0881_11
2
weather
true
weather
[ "how", "is", "something", "weathered", "_", "_", "_", "?" ]
[ "differently" ]
[ [ 3, 4 ] ]
Minerals also weather differently .
TQA:T_0881_11
2
weather
true
weather
[ "what", "is", "_", "weathered", "_", "_", "_", "?" ]
[ "Minerals" ]
[ [ 0, 1 ] ]
Some minerals completely dissolve in water .
TQA:T_0881_12
3
dissolve
true
dissolve
[ "how much", "does", "something", "dissolve", "_", "in", "something", "?" ]
[ "completely" ]
[ [ 2, 3 ] ]
Some minerals completely dissolve in water .
TQA:T_0881_12
3
dissolve
true
dissolve
[ "what", "_", "_", "dissolves", "_", "in", "something", "?" ]
[ "Some minerals" ]
[ [ 0, 2 ] ]
Some minerals completely dissolve in water .
TQA:T_0881_12
3
dissolve
true
dissolve
[ "what", "does", "something", "dissolve", "_", "in", "_", "?" ]
[ "water" ]
[ [ 5, 6 ] ]
As less resistant minerals dissolve away , a rocks surface becomes pitted and rough .
TQA:T_0881_13
4
dissolve
true
dissolve
[ "how", "does", "something", "dissolve", "_", "_", "_", "?" ]
[ "away , a rocks surface becomes pitted and rough", "away" ]
[ [ 5, 14 ], [ 5, 6 ] ]
As less resistant minerals dissolve away , a rocks surface becomes pitted and rough .
TQA:T_0881_13
4
dissolve
true
dissolve
[ "what", "_", "_", "dissolves", "_", "_", "_", "?" ]
[ "less resistant minerals" ]
[ [ 1, 4 ] ]
As less resistant minerals dissolve away , a rocks surface becomes pitted and rough .
TQA:T_0881_13
10
becomes
true
become
[ "what", "_", "_", "becomes", "something", "_", "_", "?" ]
[ "a rocks surface" ]
[ [ 7, 10 ] ]
As less resistant minerals dissolve away , a rocks surface becomes pitted and rough .
TQA:T_0881_13
10
becomes
true
become
[ "what", "does", "something", "become", "_", "_", "_", "?" ]
[ "pitted", "rough", "pitted and rough" ]
[ [ 11, 12 ], [ 13, 14 ], [ 11, 14 ] ]
As less resistant minerals dissolve away , a rocks surface becomes pitted and rough .
TQA:T_0881_13
10
becomes
true
become
[ "why", "does", "something", "become", "something", "_", "_", "?" ]
[ "less resistant minerals dissolve away" ]
[ [ 1, 6 ] ]
As less resistant minerals dissolve away , a rocks surface becomes pitted and rough .
TQA:T_0881_13
11
pitted
true
pit
[ "how", "does", "something", "pit", "_", "_", "_", "?" ]
[ "less resistant minerals dissolve away" ]
[ [ 1, 6 ] ]
As less resistant minerals dissolve away , a rocks surface becomes pitted and rough .
TQA:T_0881_13
11
pitted
true
pit
[ "when", "does", "something", "pit", "_", "_", "_", "?" ]
[ "a rocks surface", "As less resistant minerals dissolve away" ]
[ [ 7, 10 ], [ 0, 6 ] ]
When a less resistant mineral dissolves , more resistant mineral grains are released from the rock .
TQA:T_0881_14
5
dissolves
true
dissolve
[ "what", "_", "_", "dissolves", "_", "_", "_", "?" ]
[ "a less resistant mineral" ]
[ [ 1, 5 ] ]
When a less resistant mineral dissolves , more resistant mineral grains are released from the rock .
TQA:T_0881_14
5
dissolves
true
dissolve
[ "what", "does", "something", "dissolve", "_", "_", "do", "?" ]
[ "more resistant mineral grains are released from the rock", "more resistant mineral grains" ]
[ [ 7, 16 ], [ 7, 11 ] ]
When a less resistant mineral dissolves , more resistant mineral grains are released from the rock .
TQA:T_0881_14
12
released
true
release
[ "what", "is", "_", "released", "_", "_", "_", "?" ]
[ "more resistant mineral grains" ]
[ [ 7, 11 ] ]
When a less resistant mineral dissolves , more resistant mineral grains are released from the rock .
TQA:T_0881_14
12
released
true
release
[ "when", "is", "something", "released", "_", "_", "_", "?" ]
[ "When a less resistant mineral dissolves" ]
[ [ 0, 6 ] ]
When a less resistant mineral dissolves , more resistant mineral grains are released from the rock .
TQA:T_0881_14
12
released
true
release
[ "where", "is", "something", "released", "_", "_", "_", "?" ]
[ "from the rock" ]
[ [ 13, 16 ] ]
Igneous rocks tend to weather slowly because they are hard .
TQA:T_0881_2
2
tend
true
tend
[ "what", "does", "something", "tend", "_", "_", "to do", "?" ]
[ "weather slowly" ]
[ [ 4, 6 ] ]
Igneous rocks tend to weather slowly because they are hard .
TQA:T_0881_2
2
tend
true
tend
[ "what", "_", "_", "tends", "_", "_", "to do something", "?" ]
[ "Igneous rocks" ]
[ [ 0, 2 ] ]
Igneous rocks tend to weather slowly because they are hard .
TQA:T_0881_2
2
tend
true
tend
[ "why", "does", "something", "tend", "_", "_", "to do something", "?" ]
[ "because they are hard" ]
[ [ 6, 10 ] ]
Igneous rocks tend to weather slowly because they are hard .
TQA:T_0881_2
4
weather
true
weather
[ "how", "does", "something", "weather", "_", "_", "_", "?" ]
[ "slowly" ]
[ [ 5, 6 ] ]
Igneous rocks tend to weather slowly because they are hard .
TQA:T_0881_2
4
weather
true
weather
[ "what", "_", "_", "weathers", "_", "_", "_", "?" ]
[ "Igneous rocks" ]
[ [ 0, 2 ] ]
Igneous rocks tend to weather slowly because they are hard .
TQA:T_0881_2
4
weather
true
weather
[ "why", "does", "something", "weather", "_", "_", "_", "?" ]
[ "because they are hard" ]
[ [ 6, 10 ] ]
Water can not easily penetrate them .
TQA:T_0881_3
4
penetrate
true
penetrate
[ "how", "can", "something", "penetrate", "_", "_", "_", "?" ]
[ "not easily", "them" ]
[ [ 2, 4 ], [ 5, 6 ] ]
Water can not easily penetrate them .
TQA:T_0881_3
4
penetrate
true
penetrate
[ "what", "can", "_", "penetrate", "_", "_", "_", "?" ]
[ "Water" ]
[ [ 0, 1 ] ]
Water can not easily penetrate them .
TQA:T_0881_3
4
penetrate
true
penetrate
[ "who", "can", "_", "penetrated", "_", "_", "_", "?" ]
[ "them" ]
[ [ 5, 6 ] ]
Other types of rock are easily weathered because they dissolve easily in weak acids .
TQA:T_0881_5
6
weathered
true
weather
[ "how", "is", "something", "weathered", "_", "_", "_", "?" ]
[ "easily" ]
[ [ 5, 6 ] ]
Other types of rock are easily weathered because they dissolve easily in weak acids .
TQA:T_0881_5
6
weathered
true
weather
[ "what", "is", "_", "weathered", "_", "_", "_", "?" ]
[ "Other types of rock" ]
[ [ 0, 4 ] ]
Other types of rock are easily weathered because they dissolve easily in weak acids .
TQA:T_0881_5
6
weathered
true
weather
[ "why", "is", "something", "weathered", "_", "_", "_", "?" ]
[ "they dissolve easily in weak acids", "because they dissolve easily in weak acids" ]
[ [ 8, 14 ], [ 7, 14 ] ]
Other types of rock are easily weathered because they dissolve easily in weak acids .
TQA:T_0881_5
9
dissolve
true
dissolve
[ "how", "does", "something", "dissolve", "_", "in", "something", "?" ]
[ "easily" ]
[ [ 10, 11 ] ]
Other types of rock are easily weathered because they dissolve easily in weak acids .
TQA:T_0881_5
9
dissolve
true
dissolve
[ "what", "_", "_", "dissolves", "_", "in", "something", "?" ]
[ "they", "Other types of rock" ]
[ [ 8, 9 ], [ 0, 4 ] ]
Other types of rock are easily weathered because they dissolve easily in weak acids .
TQA:T_0881_5
9
dissolve
true
dissolve
[ "what", "does", "something", "dissolve", "_", "in", "_", "?" ]
[ "in weak acids", "weak acids" ]
[ [ 11, 14 ], [ 12, 14 ] ]
Limestone is a sedimentary rock that dissolves easily .
TQA:T_0881_6
6
dissolves
true
dissolve
[ "how", "does", "something", "dissolve", "_", "_", "_", "?" ]
[ "easily" ]
[ [ 7, 8 ] ]
Limestone is a sedimentary rock that dissolves easily .
TQA:T_0881_6
6
dissolves
true
dissolve
[ "what", "_", "_", "dissolves", "_", "_", "_", "?" ]
[ "Limestone" ]
[ [ 0, 1 ] ]
When softer rocks wear away , the more resistant rocks form ridges or hills .
TQA:T_0881_7
3
wear
true
wear
[ "how", "does", "something", "wear", "_", "_", "_", "?" ]
[ "away" ]
[ [ 4, 5 ] ]
When softer rocks wear away , the more resistant rocks form ridges or hills .
TQA:T_0881_7
3
wear
true
wear
[ "what", "_", "_", "wears", "_", "_", "_", "?" ]
[ "softer rocks" ]
[ [ 1, 3 ] ]
When softer rocks wear away , the more resistant rocks form ridges or hills .
TQA:T_0881_7
10
form
true
form
[ "what", "does", "something", "form", "_", "_", "_", "?" ]
[ "ridges or hills" ]
[ [ 11, 14 ] ]
When softer rocks wear away , the more resistant rocks form ridges or hills .
TQA:T_0881_7
10
form
true
form
[ "what", "_", "_", "forms", "something", "_", "_", "?" ]
[ "the more resistant rocks" ]
[ [ 6, 10 ] ]
Devils Tower in Wyoming shows how different types of rock weather at different rates -LRB- Figure 9.5 -RRB- .
TQA:T_0881_8
4
shows
true
show
[ "what", "does", "something", "show", "_", "_", "_", "?" ]
[ "how different types of rock weather at different rates" ]
[ [ 5, 14 ] ]
Devils Tower in Wyoming shows how different types of rock weather at different rates -LRB- Figure 9.5 -RRB- .
TQA:T_0881_8
4
shows
true
show
[ "what", "_", "_", "shows", "something", "_", "_", "?" ]
[ "Devils Tower" ]
[ [ 0, 2 ] ]
Devils Tower in Wyoming shows how different types of rock weather at different rates -LRB- Figure 9.5 -RRB- .
TQA:T_0881_8
4
shows
true
show
[ "where", "does", "something", "show", "something", "_", "_", "?" ]
[ "in Wyoming", "Wyoming" ]
[ [ 2, 4 ], [ 3, 4 ] ]
The softer materials of the surrounding rocks were worn away .
TQA:T_0881_9
5
surrounding
true
surround
[ "what", "was", "_", "surrounding", "something", "_", "_", "?" ]
[ "rocks", "softer materials" ]
[ [ 6, 7 ], [ 1, 3 ] ]
The softer materials of the surrounding rocks were worn away .
TQA:T_0881_9
8
worn
true
wear
[ "how", "was", "something", "worn", "_", "_", "_", "?" ]
[ "away" ]
[ [ 9, 10 ] ]
The softer materials of the surrounding rocks were worn away .
TQA:T_0881_9
8
worn
true
wear
[ "what", "was", "something", "worn", "_", "of", "_", "?" ]
[ "The softer materials", "softer materials", "the surrounding rocks" ]
[ [ 0, 3 ], [ 1, 3 ], [ 4, 7 ] ]
The softer materials of the surrounding rocks were worn away .
TQA:T_0881_9
8
worn
true
wear
[ "what", "was", "_", "worn", "_", "_", "_", "?" ]
[ "rocks", "The softer materials", "surrounding rocks" ]
[ [ 6, 7 ], [ 0, 3 ], [ 5, 7 ] ]
Acid rain is caused by sulfur and nitrogen oxides emanating from power plants or metal refineries .
TQA:T_0900_0
3
caused
true
cause
[ "what", "is", "something", "caused", "_", "by", "_", "?" ]
[ "by sulfur and nitrogen oxides emanating from power plants or metal refineries", "sulfur and nitrogen oxides emanating" ]
[ [ 4, 16 ], [ 5, 10 ] ]
Acid rain is caused by sulfur and nitrogen oxides emanating from power plants or metal refineries .
TQA:T_0900_0
3
caused
true
cause
[ "what", "is", "something", "caused", "_", "_", "_", "?" ]
[ "Acid rain" ]
[ [ 0, 2 ] ]
Acid rain is caused by sulfur and nitrogen oxides emanating from power plants or metal refineries .
TQA:T_0900_0
3
caused
true
cause
[ "where", "is", "something", "caused", "_", "by", "something", "?" ]
[ "from power plants or metal refineries" ]
[ [ 10, 16 ] ]
Acid rain is caused by sulfur and nitrogen oxides emanating from power plants or metal refineries .
TQA:T_0900_0
9
emanating
true
emanate
[ "what", "is", "_", "emanating", "_", "_", "_", "?" ]
[ "nitrogen oxides", "sulfur and nitrogen oxides", "sulfur" ]
[ [ 7, 9 ], [ 5, 9 ], [ 5, 6 ] ]
Acid rain is caused by sulfur and nitrogen oxides emanating from power plants or metal refineries .
TQA:T_0900_0
9
emanating
true
emanate
[ "where", "is", "something", "emanating", "_", "from", "_", "?" ]
[ "from power plants or metal refineries", "power plants or metal refineries" ]
[ [ 10, 16 ], [ 11, 16 ] ]
The smokestacks have been built tall so that pollutants dont sit over cities -LRB- Figure 1.1 -RRB- .
TQA:T_0900_1
4
built
true
build
[ "how", "has", "something", "built", "_", "_", "_", "?" ]
[ "tall" ]
[ [ 5, 6 ] ]
The smokestacks have been built tall so that pollutants dont sit over cities -LRB- Figure 1.1 -RRB- .
TQA:T_0900_1
4
built
true
build
[ "what", "has", "_", "built", "_", "_", "_", "?" ]
[ "The smokestacks" ]
[ [ 0, 2 ] ]
The smokestacks have been built tall so that pollutants dont sit over cities -LRB- Figure 1.1 -RRB- .
TQA:T_0900_1
4
built
true
build
[ "why", "has", "something", "built", "_", "_", "_", "?" ]
[ "so that pollutants dont sit over cities" ]
[ [ 6, 13 ] ]
The smokestacks have been built tall so that pollutants dont sit over cities -LRB- Figure 1.1 -RRB- .
TQA:T_0900_1
10
sit
true
sit
[ "what", "doesn't", "_", "sit", "_", "_", "somewhere", "?" ]
[ "pollutants" ]
[ [ 8, 9 ] ]