Update train_dataset.csv

train_dataset.csv

@@ -12,3 +12,6 @@ How can I help to improve the water quality?, "If using a restroom is necessary,
 When is the air pollution in LA the worst?,"The air quality in LA worsens in the summer time because of the heat and sunlight increasing  the ozone formation."
 What can I do to help improve LA?. "You can make signs to give people a clear message about what they shouldn't dump in certain areas, make your own clubs to spread awareness to others about this topic, use more sustainable vehicles to get around such as bikes, save water or reuse it when cooking and even watering your plants, and so much more. You can make a difference!!!"
 What can others do to help improve LA?, "They make signs to give people a clear message about what they shouldn't dump in certain areas, make your own clubs to spread awareness to others about this topic, use more sustainable vehicles to get around such as bikes, save water or reuse it when cooking and even watering your plants, and so much more. It's always important to spread the word!!"
+What is air pollution?, "The alteration of the indoor or outdoor environment by chemical, physical, or biological agents that change the natural qualities of the atmosphere."
+Define air pollution?, "The alteration of the indoor or outdoor environment by chemical, physical, or biological agents that change the natural qualities of the atmosphere."
+