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- Mary went to the hallway. Fact 2- Daniel travelled to the bathroom. Fact 3- Mary journeyed to the bathroom. Fact 4- Daniel journeyed to the hallway. Fact 5- Daniel went back to the garden. Fact 6- Daniel travelled to the office. Fact 7- Mary went to the office. Fact 8- Mary went back to the bathroom. Question: Where is Mary? Answer: bathroom
Fact 8

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

Passage: Fact 1- Mary journeyed to the office. Fact 2- Sandra travelled to the bathroom. Fact 3- Sandra travelled to the office. Fact 4- Mary went back to the hallway. Question: Where is Mary? Answer: hallway

Fact 4