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

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

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