Problem: Generate a sentence that contains a fact.
Sentence: fat is used to keep animals warm

Problem: Generate a sentence that contains a fact.
Sentence: some lizards live in desert habitats

Problem: Generate a sentence that contains a fact.
Sentence: if one mineral can scratch another mineral then that other mineral is softer than that one mineral

Problem: Generate a sentence that contains a fact.
Sentence:
a tree can be replaced by planting a new tree