Problem: Generate a sentence that contains a fact.
Sentence: friction occurs when two object 's surfaces move against each other

Problem: Generate a sentence that contains a fact.
Sentence: green plants provide food for consumers by performing photosynthesis

Problem: Generate a sentence that contains a fact.
Sentence: lighting a candle causes that candle to burn

Problem: Generate a sentence that contains a fact.
Sentence:
soil is formed by weathering