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


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


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