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 hallway. Fact 2- John went to the garden. Fact 3- Sandra travelled to the bedroom. Fact 4- Mary travelled to the bedroom. Question: Where is Mary? Answer: bedroom
[EX A]: Fact 4

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

[EX Q]: Passage: Fact 1- Daniel journeyed to the garden. Fact 2- John moved to the garden. Fact 3- Daniel travelled to the bathroom. Fact 4- Sandra went back to the garden. Question: Where is Daniel? Answer: bathroom
[EX A]:
Fact 3