In this task, you are given a fact statement and question based on the fact. Your task is to generate the correct answer for the question. The answer needs to be generated using the context fact statement.
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Question: Fact: an organism requires energy for growth. Question: What requires energy for growth?

Answer: a hippopotamus


Question: Fact: a hot substance is a source of heat. Question: Using your electronic that uses batteries for long periods of time makes them get very hot to the touch,  which makes it a?

Answer: source of warmth


Question: Fact: limestone is formed by water evaporating from a solution of water and minerals. Question: Limestone is formed by water evaporating from a solution of water and mineral and a hard sedimentary rock used as building material and for making?

Answer:
cement