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- Sandra travelled to the hallway. Fact 2- Mary moved to the office. Question: Where is Sandra? Answer: hallway
[EX A]: Fact 1

[EX Q]: Passage: Fact 1- Daniel went to the bedroom. Fact 2- Mary went to the kitchen. Fact 3- Mary travelled to the bedroom. Fact 4- John journeyed to the bathroom. Fact 5- Sandra moved to the garden. Fact 6- Sandra went to the office. Fact 7- Daniel went back to the hallway. Fact 8- Sandra moved to the kitchen. Question: Where is Sandra? Answer: kitchen
[EX A]: Fact 8

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