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 bedroom. Fact 2- Daniel travelled to the office. Fact 3- Daniel went back to the garden. Fact 4- John journeyed to the office. Question: Where is John? Answer: office
Example Output: Fact 4

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

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. Question: Where is Mary? Answer: garden
Example Output:
Fact 4