Problem: Generate a sentence that contains a fact.
Sentence: a sifter is used for separating mixtures
Problem: Randomly generate a fact.

Random fact: when the seasons change from the summer to the fall , the amount of daylight will decrease
Generate a sentence that answers this question: "A thing that may be weathered when a plant lays down roots is".

Answer: An example of weathering is when a plant root grows into a crack in rock
question: What sentence would provide a factual answer to this question: "A thing which is a producer in the food chain is most likely to be a"

answer: producer is a kind of role in the food chain process
Problem: What is a random fact?

Answer: fog is formed by water vapor condensing in the air
Problem: Generate a sentence that contains a fact.
Sentence:
the Himalayas were formed by rock folding