Problem: Generate a sentence that contains a fact.
Sentence: if an object undergoes chemical change then that object will have new chemical properties

Problem: Generate a sentence that contains a fact.
Sentence: burning gasoline is a source of pollution

Problem: Generate a sentence that contains a fact.
Sentence: a Rotation of the Earth on itself takes one day

Problem: Generate a sentence that contains a fact.
Sentence:
many vehicles emit pollution into the air