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

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

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