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: Weight is the force of gravity. Question: What is the force of gravity called?

Answer: weight


Question: Sentence: No lungs do fish have short esophaguses. Question: Why do fish have short esophaguses?

Answer: no lungs


Question: Sentence: Lymph vessels are like blood vessels, except they move lymph instead of blood. Question: Lymph vessels are like blood vessels, except they move what instead of blood?

Answer:
lymph