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

A: Fact 6
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Q: Passage: Fact 1- Mary travelled to the garden. Fact 2- Daniel moved to the bathroom. Question: Where is Mary? Answer: garden

A: Fact 1
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Q: Passage: Fact 1- Mary went to the garden. Fact 2- Daniel journeyed to the bathroom. Fact 3- John went to the office. Fact 4- Mary moved to the hallway. Fact 5- John went to the bathroom. Fact 6- Daniel moved to the kitchen. Fact 7- John went to the kitchen. Fact 8- Daniel went to the bedroom. Question: Where is Mary? Answer: hallway

A:
Fact 4
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