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 went back to the office. Fact 2- John went back to the bathroom. Fact 3- John went to the hallway. Fact 4- Mary journeyed to the hallway. Question: Where is Mary? Answer: hallway
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

Example Input: Passage: Fact 1- John went to the office. Fact 2- Mary journeyed to the garden. Question: Where is Mary? Answer: garden
Example Output:
Fact 2