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

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

[EX Q]: Passage: Fact 1- Sandra went to the hallway. Fact 2- Sandra journeyed to the kitchen. Fact 3- Sandra travelled to the garden. Fact 4- Mary journeyed to the garden. Question: Where is Mary? Answer: garden
[EX A]:
Fact 4