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.

Q: Sentence: Rock containing fossilized seashells found on a mountaintop of the following provides the best evidence that earth has evolved over geologic time. Question: Which of the following provides the best evidence that Earth has evolved over geologic time?

A: rock containing fossilized seashells found on a mountaintop
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Q: Sentence: Drought makes marginal lands unsuitable for farming. Question: What makes marginal lands unsuitable for farming?

A: drought
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Q: Sentence: Human overpopulation is crowding out other species and making all the other causes of extinction worse. Question: What phenomenon is crowding out other species and making all the other causes of extinction worse?

A:
human overpopulation
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