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 back to the hallway. Fact 2- Sandra journeyed to the garden. Fact 3- Sandra travelled to the bathroom. Fact 4- John travelled to the hallway. Question: Where is Sandra? Answer: bathroom
Example Output: Fact 3

Example Input: Passage: Fact 1- Daniel went to the kitchen. Fact 2- Sandra went to the kitchen. Question: Where is Sandra? Answer: kitchen
Example Output: Fact 2

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