question: What sentence would provide a factual answer to this question: "What stores food for future use and is green?"

answer: usually plants store the food they produce for future use
Problem: What is a random fact?

Answer: a car engine usually converts gasoline into motion and heat through combustion
Problem: Generate a sentence that contains a fact.

bluebirds live in grassy spaces
Problem: Generate a sentence that contains a fact.
Sentence: fire causes burning
Problem: Randomly generate a fact.

Random fact: light can travel through a vacuum
question: What sentence would provide a factual answer to this question: "The purpose of bird feathers, especially down, is to"

answer:
down feathers are a thermal energy insulator