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: Muscles need stimulus to contract. Question: What do muscles need to contract?
[A]: stimulus


[Q]: Sentence: The term fitness describes the overall ability of an animal to survive and produce offspring. Question: What term describes the overall ability of an animal to survive and produce offspring?
[A]: fitness


[Q]: Sentence: The outer core of the earth is molten. Question: Which layer of the earth is molten?
[A]:
the outer core