Problem: Generate a sentence that contains a fact.
Sentence: a soda can is made of aluminum
Problem: Randomly generate a fact.

Random fact: magnetic attraction pulls two objects together
Generate a sentence that answers this question: "What usually occurs over a period of many years?".

Answer: weathering usually occurs over a period of many years
question: What sentence would provide a factual answer to this question: "Friction is used to stop what using brakes?"

answer: friction is used for stopping a vehicle by brakes
Problem: What is a random fact?

Answer: an electrical device requires electricity to turn on
Problem: Generate a sentence that contains a fact.
Sentence:
the sun is a source of light called sunlight