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 went back to the hallway. Fact 2- Daniel moved to the garden. Question: Where is John? Answer: hallway
Example Output: Fact 1

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

Example Input: Passage: Fact 1- Daniel moved to the hallway. Fact 2- Daniel travelled to the office. Fact 3- Daniel went to the bedroom. Fact 4- Daniel journeyed to the office. Question: Where is Daniel? Answer: office
Example Output:
Fact 4