Problem: Generate a sentence that contains a fact.
Sentence: if an organism 's prey moves quickly then that organism may need to move quickly to catch its prey

Problem: Generate a sentence that contains a fact.
Sentence: if members of a species are born then the population of that species increases

Problem: Generate a sentence that contains a fact.
Sentence: if a tree is cut down then that tree will die

Problem: Generate a sentence that contains a fact.
Sentence:
weathering usually occurs over a period of many years