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: pollution contains matter suspended in air, question: What is suspended in the air?

Answer: matter

Question: statement: Kidney infections can be treated with penicillin, question: What can be used to treat Kidney infections?

Answer: penicillin

Question: statement: Water is essential for all known living things in the universe., question: What is essential for all known living things in the universe?

Answer:
Water