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.

[EX Q]: Passage: Fact 1- Mary went to the kitchen. Fact 2- John travelled to the hallway. Fact 3- Sandra went back to the bedroom. Fact 4- John travelled to the kitchen. Fact 5- Mary went back to the garden. Fact 6- Mary travelled to the office. Fact 7- John journeyed to the office. Fact 8- Sandra went to the office. Question: Where is Mary? Answer: office
[EX A]: Fact 6

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

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