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.

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

Passage: Fact 1- Sandra went to the bathroom. Fact 2- John journeyed to the hallway. Question: Where is John? Answer: hallway
Fact 2

Passage: Fact 1- Mary went to the kitchen. Fact 2- John went back to the bedroom. Fact 3- Mary went back to the bathroom. Fact 4- Mary moved to the hallway. Question: Where is John? Answer: bedroom

Fact 2