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 garden. Fact 2- Sandra went back to the bedroom. Question: Where is John? Answer: garden
Example Output: Fact 1

Example Input: Passage: Fact 1- Sandra went to the bedroom. Fact 2- Mary moved to the bedroom. Question: Where is Mary? Answer: bedroom
Example Output: Fact 2

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