What was more expensive, matches in 1944 or a kilogram of camote in 1945?
return matches ;return a kilogram of camote ;return price of #1 ;return price of #2 ;return #3 in  1944 ;return #4 in  1945 ;return which is the  highest of #5 ,  #6
['select', 'select', 'project', 'project', 'filter', 'filter', 'comparison']