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: smell is used for finding food by some animals. Question: Some animals are aided in finding food sources by?
aroma

Fact: pushing on the pedals of a bike cause that bike to move. Question: Pushing on a pedal is an example of?
force

Fact: the respiratory system transfers oxygen to the circulatory system. Question: The function of your lungs be impaired on?

Saturn's rings