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 travelled to the bathroom. Fact 2- Sandra moved to the hallway. Fact 3- Sandra went to the office. Fact 4- Mary journeyed to the kitchen. Question: Where is Mary? Answer: kitchen

Ex Output:
Fact 4


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

Ex Output:
Fact 7


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

Ex Output:

Fact 8