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 went to the bedroom. Fact 2- Mary moved to the bedroom. Question: Where is Mary? Answer: bedroom
[EX A]: Fact 2

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

[EX Q]: Passage: Fact 1- Sandra went to the garden. Fact 2- John journeyed to the kitchen. Fact 3- John went back to the office. Fact 4- Daniel moved to the garden. Fact 5- Mary went back to the hallway. Fact 6- Sandra moved to the bedroom. Fact 7- Daniel journeyed to the hallway. Fact 8- Sandra travelled to the bathroom. Fact 9- Daniel moved to the kitchen. Fact 10- Sandra went to the garden. Question: Where is Sandra? Answer: garden
[EX A]:
Fact 10