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- Daniel went to the office. Fact 2- Mary went back to the bedroom. Question: Where is Mary? Answer: bedroom

Ex Output:
Fact 2


Ex Input:
Passage: Fact 1- John travelled to the bathroom. Fact 2- Sandra went to the kitchen. Question: Where is Sandra? Answer: kitchen

Ex Output:
Fact 2


Ex Input:
Passage: Fact 1- Daniel moved to the kitchen. Fact 2- Sandra went to the kitchen. Fact 3- John went back to the bedroom. Fact 4- Daniel went to the bathroom. Fact 5- Sandra moved to the garden. Fact 6- Daniel went back to the office. Fact 7- Mary went to the kitchen. Fact 8- Daniel went to the hallway. Fact 9- Daniel went back to the bathroom. Fact 10- Sandra moved to the office. Question: Where is Sandra? Answer: office

Ex Output:

Fact 10