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

Ex Output:
Fact 3


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

Ex Output:
Fact 4


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

Ex Output:

Fact 8