input question: Mike and his family are going on a camping trip. Mike being the outdoors-man he is decides to bring an axe along so they can make an authentic campfire. When they get to the site he chops some wood, piles it up and lights it creating a nice strong flame. Which is the source of the energy in Mike's campfire, the wood or the fire????
output answer: wood

input question: Two sister cities used petroleum products in different ways. Sin city used it for fuel, while Hill city used it only for making plastic materials which would then recycle. Which city used more fuel for trucks????
output answer: Sin

input question: Mike is studying for his zoology class. Today, he is studying about reptiles and amphibians. He found it easy to understand their differences by categorizing them. For that, he classified reptiles as class A and amphibians as class B. Would class B animals have less or more efficient respiratory system than class A????
output answer: less

input question: Big city and Large city are situated 50 miles apart, on opposite sides of a mountain range. Both cities have lots of people with respiratory diseases. Big city has more people getting infected by viruses, while Large city has more people infected by bacteria and fungi. Which city has fewer people catching acute bronchitis????
output answer:
Big