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.

Q: Fact: biofuel is used to produce electricity by burning. Question: An example of biofuel could be?

A: leaves
****
Q: Fact: sand dunes are made of sand. Question: Obstacles that might impede a dune are?

A: cacti
****
Q: Fact: if an organism dies then the population of that organism will decrease. Question: If an organism dies then the population of that organism will what?

A:
lessen
****