Given a statement and question, generate the answer to the question such that the answer is contained in the statement.

Q: statement: upper arm muscles contracting causes a person 's elbow to elongate, question: What muscle contracting causes a person's elbow to elongate?

A: upper arm
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Q: statement: Tigers eat other animals sometimes., question: Who eats other animals sometimes?

A: Tigers
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Q: statement: painful urination can be treated with drugs prescribed by a doctor, question: What can painful urination be treated with?

A:
drugs
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