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- John moved to the bedroom. Fact 2- Mary moved to the hallway. Question: Where is Mary? Answer: hallway

Ex Output:
Fact 2


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

Ex Output:
Fact 4


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

Ex Output:

Fact 6