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- Daniel travelled to the hallway. Fact 2- John journeyed to the hallway. Question: Where is John? Answer: hallway
[EX A]: Fact 2

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

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