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

Passage: Fact 1- Daniel journeyed to the kitchen. Fact 2- Daniel journeyed to the bedroom. Fact 3- Sandra moved to the garden. Fact 4- Sandra went back to the kitchen. Fact 5- Daniel travelled to the office. Fact 6- Sandra went back to the hallway. Question: Where is Sandra? Answer: hallway
Fact 6

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

Fact 8