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

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

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