Problem: Generate a sentence that contains a fact.
Sentence: a desert environment contains very little food
Problem: Randomly generate a fact.

Random fact: the volume of an object can be used to describe the size of that object
Generate a sentence that answers this question: "Rainbows need".

Answer: sunlight and rain can cause a rainbow
question: What sentence would provide a factual answer to this question: "What is a renewable source?"

answer: solar energy is a renewable resource
Problem: What is a random fact?

Answer: An example of a change in the Earth is an ocean becoming a wooded area
Problem: Generate a sentence that contains a fact.
Sentence:
a magnet attracts magnetic metals through magnetism