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 hallway. Fact 2- Daniel travelled to the bathroom. Fact 3- Mary journeyed to the bathroom. Fact 4- Daniel journeyed to the hallway. Fact 5- Daniel went back to the garden. Fact 6- Daniel travelled to the office. Fact 7- Mary went to the office. Fact 8- Mary went back to the bathroom. Question: Where is Mary? Answer: bathroom
[A]: Fact 8


[Q]: Passage: Fact 1- Sandra journeyed to the bathroom. Fact 2- Daniel moved to the garden. Fact 3- Mary went back to the garden. Fact 4- Daniel went back to the kitchen. Fact 5- Mary went back to the bedroom. Fact 6- Mary went back to the bathroom. Fact 7- John journeyed to the hallway. Fact 8- John went back to the bedroom. Fact 9- Daniel journeyed to the bathroom. Fact 10- John went back to the office. Question: Where is John? Answer: office
[A]: Fact 10


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