Problem: Generate a sentence that contains a fact.
Sentence: as the roughness of something increases , the friction of that something will increase when its surface moves against another surface

Problem: Generate a sentence that contains a fact.
Sentence: ferrous metals contain iron

Problem: Generate a sentence that contains a fact.
Sentence: when a gas in an open container evaporates, that gas spreads out into the air

Problem: Generate a sentence that contains a fact.
Sentence:
condensation is a stage in the water cycle process