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- Sandra went to the kitchen. Fact 2- Daniel went back to the bathroom. Fact 3- Daniel journeyed to the hallway. Fact 4- Mary journeyed to the kitchen. Fact 5- Sandra travelled to the bedroom. Fact 6- Sandra went to the office. Fact 7- Mary moved to the office. Fact 8- Sandra went back to the hallway. Question: Where is Mary? Answer: office

A: Fact 7
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Q: Passage: Fact 1- Sandra journeyed to the bathroom. Fact 2- Daniel moved to the garden. Question: Where is Daniel? Answer: garden

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

A:
Fact 4
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