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

Example Input: Passage: Fact 1- Mary went back to the bedroom. Fact 2- Mary travelled to the bathroom. Fact 3- John travelled to the office. Fact 4- Mary travelled to the bedroom. Question: Where is Mary? Answer: bedroom
Example Output: Fact 4

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