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

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

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