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

Ex Output:
Fact 8


Ex Input:
Passage: Fact 1- Mary went back to the hallway. Fact 2- John went to the garden. Question: Where is Mary? Answer: hallway

Ex Output:
Fact 1


Ex Input:
Passage: Fact 1- Sandra moved to the hallway. Fact 2- John moved to the hallway. Fact 3- John journeyed to the bathroom. Fact 4- Daniel went back to the bedroom. Fact 5- Mary travelled to the bedroom. Fact 6- Mary journeyed to the garden. Fact 7- John travelled to the bedroom. Fact 8- Sandra journeyed to the garden. Fact 9- John journeyed to the kitchen. Fact 10- Sandra went to the kitchen. Question: Where is John? Answer: kitchen

Ex Output:

Fact 9