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

Ex Output:
Fact 5


Ex Input:
Passage: Fact 1- Sandra went to the bathroom. Fact 2- Daniel went to the bedroom. Fact 3- Mary went to the garden. Fact 4- Sandra moved to the hallway. Question: Where is Sandra? Answer: hallway

Ex Output:
Fact 4


Ex Input:
Passage: Fact 1- Mary travelled to the garden. Fact 2- John journeyed to the bathroom. Fact 3- Mary journeyed to the kitchen. Fact 4- John travelled to the kitchen. Question: Where is John? Answer: kitchen

Ex Output:

Fact 4