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.

[Q]: 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
[A]: Fact 4


[Q]: Passage: Fact 1- Daniel moved to the bedroom. Fact 2- John went back to the garden. Fact 3- John travelled to the bathroom. Fact 4- John travelled to the garden. Question: Where is John? Answer: garden
[A]: Fact 4


[Q]: 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
[A]:
Fact 6