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- Mary moved to the office. Fact 2- Daniel went to the kitchen. Question: Where is Mary? Answer: office
[A]: Fact 1


[Q]: Passage: Fact 1- Mary went back to the office. Fact 2- Mary went to the bathroom. Fact 3- Mary went back to the hallway. Fact 4- John journeyed to the hallway. Question: Where is Mary? Answer: hallway
[A]: Fact 3


[Q]: Passage: Fact 1- Mary travelled to the hallway. Fact 2- Sandra went to the garden. Fact 3- Daniel travelled to the bedroom. Fact 4- Mary went to the bedroom. Fact 5- Daniel moved to the hallway. Fact 6- John travelled to the bathroom. Question: Where is Sandra? Answer: garden
[A]:
Fact 2