Problem: Generate a sentence that contains a fact.
Sentence: natural magnetism is used for pointing north by a compass
Problem: Randomly generate a fact.

Random fact: brass is made of copper and zinc
Generate a sentence that answers this question: "Metamorphosis is complete at".

Answer: a moth undergoes metamorphosis
question: What sentence would provide a factual answer to this question: "Why would a lightbulb be dark?"

answer: electricity can not flow through an open circuit
Problem: What is a random fact?

Answer: non-contact forces can affect objects that are not touching
Problem: Generate a sentence that contains a fact.
Sentence:
when light enters the eye through the pupil , that light falls on the retina