Generate a sentence that answers this question: "if a person eats a fruit, it is possible it was once which of these?".

Answer: some flowers become fruits

Generate a sentence that answers this question: "A pollutions standard is something which".

Answer: a pollutions standard is a kind of standard for reducing pollutants emitted by factories

Generate a sentence that answers this question: "Iron is used to make".

Answer:
iron nails are made of iron