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

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

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