In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
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Question: Sentence: Most of the heat that enters the mesosphere comes from the stratosphere. Question: Most of the heat that enters the mesosphere comes from where?

Answer: the stratosphere


Question: Sentence: In some ways, a collection of gas molecules represents the simplest form of matter. Question: In some ways, a collection of gas molecules represents the simplest form of what?

Answer: matter


Question: Sentence: Because atoms have equal numbers of positive protons and negative electrons, they possess a neutral charge. Question: Because atoms have equal numbers of positive protons and negative electrons, what kind of electric charge do they possess?

Answer:
neutral