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: Octopuses expel a dark cloud to hide from dolphins., question: What expels a dark cloud to hide from dolphins?

Answer: Octopuses


Question: statement: Complex chemistry occurs in cells, question: What occurs in cells?

Answer: Complex chemistry


Question: statement: Embryo implantation is used in reproduction., question: What is Embryo implantation used in?

Answer:
reproduction