Problem: Generate a sentence that contains a fact.

casting an image of an object through a pinhole onto a screen does not require looking directly at the object
Problem: Generate a sentence that contains a fact.
Sentence: friction acts to counter the motion of two objects when their surfaces are touching
Problem: Randomly generate a fact.

Random fact: planets orbit stars
Generate a sentence that answers this question: "A switch is used to stop the flow of currents which causes Joule heating in".

Answer: a switch is used to stop the flow of current in an electrical circuit
question: What sentence would provide a factual answer to this question: "Folding up rocks can happen when"

answer: earthquakes cause rock layers to fold on top of each other
Problem: Randomly generate a fact.

Random fact:
wind is a source of energy