question: What sentence would provide a factual answer to this question: "Which is a visible example of water vapor"

answer: water vapor is found in the atmosphere
Problem: What is a random fact?

Answer: December is during the winter in the northern hemisphere
Problem: Generate a sentence that contains a fact.

air is a vehicle for sound
Problem: Generate a sentence that contains a fact.
Sentence: an organism requires energy for growth
Problem: Randomly generate a fact.

Random fact: a mirror reflects light
question: What sentence would provide a factual answer to this question: "What will happen to gas once heated?"

answer:
if gas is heated then that gas will rise