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: 10 million years long can a large star be on the main sequence stage. Question: How long can a large star be on the main sequence stage?

Answer: 10 million years


Question: Sentence: The composition of the atmosphere has changed over the last 200 years primarily due to human activity. Question: Which of the following has changed over the last 200 years primarily due to human activity?

Answer: the composition of the atmosphere


Question: Sentence: Single-celled organisms are prokaryotes. Question: What kind of organisms are prokaryotes?

Answer:
single-celled