Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.
--------
Question: Fact: lighting a candle causes that candle to burn

Answer: Which of the following burns due to wax?


Question: Fact: fertilizers are a source of pollution

Answer: What are some of the risks of using fertilizer?


Question: Fact: Earth orbiting the Sun causes seasons to change

Answer:
Earth orbiting what causes seasons to change?