In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
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Question: When does crossing over occur in prophase 1?

Answer: pachytene stage


Question: When did canadian tire buy mark work wearhouse?

Answer: 2001


Question: What do you call rocks that form when flowing lava solidifies?

Answer:
magmatic