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 bathroom. Fact 2- Sandra went to the kitchen. Question: Where is Sandra? Answer: kitchen
Example Output: Fact 2

Example Input: Passage: Fact 1- Daniel journeyed to the kitchen. Fact 2- John went back to the kitchen. Fact 3- Mary went to the hallway. Fact 4- John moved to the office. Fact 5- Daniel travelled to the hallway. Fact 6- Mary went to the garden. Fact 7- Mary went back to the office. Fact 8- Mary went to the garden. Fact 9- Sandra moved to the bathroom. Fact 10- Daniel moved to the office. Question: Where is Mary? Answer: garden
Example Output: Fact 8

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