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 journeyed to the bathroom. Fact 2- Mary moved to the hallway. Fact 3- Daniel moved to the bathroom. Fact 4- Sandra went back to the bathroom. Question: Where is Mary? Answer: hallway
[A]: Fact 2


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


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