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: as distance from a source of light increases , that source of light will appear dimmer

Answer: The further a ship sails away from a light house?


Question: Fact: ethanol sometimes is made of corn

Answer: Ethanol sometimes might be?


Question: Fact: magnetic attraction pulls two objects together

Answer:
if two things seemingly come closer together without a person interfering, which of these is likely?