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 moved to the bathroom. Fact 2- John journeyed to the office. Question: Where is Sandra? Answer: bathroom

Ex Output:
Fact 1


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

Ex Output:
Fact 1


Ex Input:
Passage: Fact 1- Sandra journeyed to the bathroom. Fact 2- Daniel moved to the garden. Question: Where is Daniel? Answer: garden

Ex Output:

Fact 2