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.
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Question: Question: A fan pushes air with? Answer: rotating flat surface.

Answer: the vanes rotating in an electric fan causes air to move

Question: Question: Using less anthracite has a positive impact on the? Answer: ecosystem.

Answer: conserving resources has a positive impact on the environment

Question: Question: Rubber will keep? Answer: heat from spreading.

Answer:
rubber is an thermal insulator