instruction:
In this task, you are given a fact statement and question based on the fact. Your task is to generate the correct answer for the question. The answer needs to be generated using the context fact statement.
question:
Fact: exercise has a positive impact on a human 's health. Question: Who is in better shape?
answer:
a body builder

question:
Fact: a barometer is used to measure air pressure. Question: O2 molecules stacked on top of each other create weight which is then tallied by a?
answer:
barometer

question:
Fact: rainfall is the amount of rain an area receives. Question: What will be more available in an area when rainfall increases?
answer:
H2O