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.

Fact: pollution is a source of pollutants. Question: Pollution is?
throwing a candy wrapper down

Fact: the sun causes water to evaporate more quickly by adding heat. Question: Water evaporates less?
in a basement

Fact: exercise has a positive impact on a body 's strength. Question: What has a positive impact on body strength?

active physical effort