Problem: Generate a sentence that contains a fact.
Sentence: birds sometimes eat insects

Problem: Generate a sentence that contains a fact.
Sentence: shivering is when an animal creates heat by shaking to keep the body warm

Problem: Generate a sentence that contains a fact.
Sentence: a seismograph is used for measuring the size of an earthquake

Problem: Generate a sentence that contains a fact.
Sentence:
a hot substance is a source of heat