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.

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

[EX Q]: Passage: Fact 1- Daniel journeyed to the kitchen. Fact 2- Daniel went back to the bedroom. Question: Where is Daniel? Answer: bedroom
[EX A]: Fact 2

[EX Q]: Passage: Fact 1- Daniel went back to the bathroom. Fact 2- Mary journeyed to the office. Question: Where is Daniel? Answer: bathroom
[EX A]:
Fact 1