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

Q: statement: metal, stainless steel and plastic are used to support towers., question: What type of steel is used to support towers?

A: steel
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Q: statement: If you want to see details of a star you need a high speed camera., question: What type of camera does a star need?

A: high speed camera
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Q: statement: Muscles in the upper arm lengthen a person's elbow., question: What lengthens a person's elbow?

A:
Muscles
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