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 back to the office. Fact 2- Sandra moved to the bathroom. Fact 3- Mary travelled to the office. Fact 4- Mary moved to the hallway. Fact 5- Mary went to the bedroom. Fact 6- Mary journeyed to the office. Question: Where is Mary? Answer: office
[EX A]: Fact 6

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

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