In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.

Q: Question: Which of the following relationships is true? Answer: Diamond can scratch Play-Doh, therefore diamond is harder.

A: if one mineral can scratch another mineral then that other mineral is softer than that one mineral
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Q: Question: Cars are big polluters because they release toxins from the gas into the air making it? Answer: unhealthy to breathe.

A: polluting means something poisonous is added to an environment causing harm to the environment
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Q: Question: Using less anthracite has a positive impact on the? Answer: ecosystem.

A:
conserving resources has a positive impact on the environment
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