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: An example of a reproductive behavior is salmon returning to their birthplace to lay their eggs

Problem: Generate a sentence that contains a fact.
Sentence: thick feathers can be used for keeping warm

Problem: Generate a sentence that contains a fact.
Sentence:
as distance to an object increases , that object will appear smaller