Problem: Generate a sentence that contains a fact.
Sentence: a car engine is a source of heat
Problem: Randomly generate a fact.

Random fact: a skinny beak is used for obtaining food by a bird from small spaces
Generate a sentence that answers this question: "If a house is built using a raw material, it can be built with".

Answer: if something is a raw material then that something comes directly from a source
question: What sentence would provide a factual answer to this question: "amphibians hatch from"

answer: amphibians hatch from eggs
Problem: What is a random fact?

Answer: coloration is used to find a mate by some animals
Problem: Generate a sentence that contains a fact.
Sentence:
climate is the usual kind of weather in a location