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

Ex Output:
Fact 8


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

Ex Output:
Fact 4


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

Ex Output:

Fact 8