Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
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Question: statement: metal, stainless steel and plastic are used to support towers., question: What type of steel is used to support towers?

Answer: steel


Question: statement: Going from place to place with an automobile necessitates navigation., question: What does going from place to place with an automobile require?

Answer: navigation


Question: statement: Hornworts depend on moisture to reproduce., question: Hornworts depend on what to reproduce?

Answer:
moisture