input:  Now, answer this question: You are presented with the quiz "Mammals require what for breathing?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an animal requires air for survival" and "animals require oxygen for breathing".   So, what's the best answer to the question?
A:
output: oxygen

input:  Now, answer this question: You are presented with the quiz "What do glaciers do to rocks?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aglacier causes mechanical weathering" and "mechanical weathering happens when things like ice physically break rock apart".   So, what's the best answer to the question?
A:
output: Breaks them apart

input:  Now, answer this question: You are presented with the quiz "what lacks chlorophyll?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "fungi lack chlorophyll, so they cannot make food by photosynthesis as plants can" and "mushrooms are an example of fungi".   So, what's the best answer to the question?
A:
output:
mushrooms