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 travelled to the garden. Fact 2- Daniel moved to the bathroom. Question: Where is Mary? Answer: garden
Example Output: Fact 1

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

Example Input: Passage: Fact 1- Mary went to the bathroom. Fact 2- John travelled to the hallway. Question: Where is Mary? Answer: bathroom
Example Output:
Fact 1