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.

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

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

Example 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. Question: Where is Mary? Answer: kitchen
Example Output:
Fact 2