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

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

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