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- Mary went to the bedroom. Fact 2- John journeyed to the bathroom. Fact 3- Sandra journeyed to the hallway. Fact 4- John journeyed to the garden. Question: Where is Mary? Answer: bedroom

Ex Output:
Fact 1


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

Ex Output:
Fact 2


Ex Input:
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. Question: Where is Sandra? Answer: office

Ex Output:

Fact 6