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 office. Fact 2- Sandra travelled to the bathroom. Fact 3- Mary went back to the hallway. Fact 4- Mary travelled to the bathroom. Fact 5- Daniel went to the bedroom. Fact 6- Mary went to the office. Question: Where is Mary? Answer: office

Ex Output:
Fact 6


Ex Input:
Passage: Fact 1- John went back to the garden. Fact 2- John travelled to the hallway. Fact 3- John journeyed to the office. Fact 4- John journeyed to the kitchen. Question: Where is John? Answer: kitchen

Ex Output:
Fact 4


Ex Input:
Passage: Fact 1- Daniel went back to the office. Fact 2- Sandra went to the garden. Question: Where is Daniel? Answer: office

Ex Output:

Fact 1