Problem: Generate a sentence that contains a fact.
Sentence: sound can be used for communication by animals

Problem: Generate a sentence that contains a fact.
Sentence: pollution is when humans pollute the environment with pollutants

Problem: Generate a sentence that contains a fact.
Sentence: exercise has a positive impact on a human 's health

Problem: Generate a sentence that contains a fact.
Sentence:
a quartz is made of six-sided transparent crystals