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

Example Input: Passage: Fact 1- John went to the office. Fact 2- Mary journeyed to the garden. Fact 3- John went to the garden. Fact 4- John journeyed to the hallway. Question: Where is John? Answer: hallway
Example Output: Fact 4

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