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

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

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

Fact 4