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- Sandra went to the kitchen. Fact 2- Daniel went back to the bathroom. Fact 3- Daniel journeyed to the hallway. Fact 4- Mary journeyed to the kitchen. Question: Where is Mary? Answer: kitchen
Example Output: Fact 4

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

Example Input: Passage: Fact 1- John went back to the hallway. Fact 2- Daniel journeyed to the bedroom. Question: Where is John? Answer: hallway
Example Output:
Fact 1