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

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

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