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

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

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