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


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


[Q]: Passage: Fact 1- Sandra journeyed to the garden. Fact 2- Mary travelled to the hallway. Question: Where is Mary? Answer: hallway
[A]:
Fact 2