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 to the kitchen. Fact 2- John went back to the bedroom. Fact 3- Mary went back to the bathroom. Fact 4- Mary moved to the hallway. Question: Where is John? Answer: bedroom
Example Output: Fact 2

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

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