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- John went to the bathroom. Fact 2- John moved to the office. Fact 3- John went to the hallway. Fact 4- Sandra journeyed to the hallway. Fact 5- John journeyed to the bathroom. Fact 6- Daniel went to the bathroom. Fact 7- Sandra moved to the garden. Fact 8- John moved to the office. Question: Where is John? Answer: office

Ex Output:
Fact 8


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

Ex Output:
Fact 2


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

Ex Output:

Fact 8