Problem: Generate a sentence that contains a fact.
Sentence: animals exhale carbon dioxide from their lungs into the air

Problem: Generate a sentence that contains a fact.
Sentence: timber companies cut down trees

Problem: Generate a sentence that contains a fact.
Sentence: as the available water in an environment increases , the populations of organisms in that environment will increase

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