You will be given a passage with an enumerated set of facts, a question of form 'Where is <person_name>?', and its answer. The task is to identify a supporting fact that is necessary to answer the question. The output would be the corresponding fact number.

Q: Passage: Fact 1- Mary went to the kitchen. Fact 2- John went back to the bedroom. Fact 3- Mary went back to the bathroom. Fact 4- Mary moved to the hallway. Question: Where is John? Answer: bedroom

A: Fact 2
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Q: Passage: Fact 1- John went back to the kitchen. Fact 2- John moved to the office. Fact 3- John journeyed to the garden. Fact 4- Sandra journeyed to the bedroom. Question: Where is John? Answer: garden

A: Fact 3
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Q: Passage: Fact 1- Sandra moved to the hallway. Fact 2- John moved to the hallway. Fact 3- John journeyed to the bathroom. Fact 4- Daniel went back to the bedroom. Fact 5- Mary travelled to the bedroom. Fact 6- Mary journeyed to the garden. Question: Where is Daniel? Answer: bedroom

A:
Fact 4
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