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

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

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

Fact 8