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.

Input: Consider Input: Passage: Fact 1- Daniel journeyed to the hallway. Fact 2- Sandra travelled to the kitchen. Question: Where is Sandra? Answer: kitchen

Output: Fact 2


Input: Consider 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

Output: Fact 3


Input: Consider Input: Passage: Fact 1- Mary journeyed to the bathroom. Fact 2- Mary moved to the hallway. Fact 3- Daniel moved to the bathroom. Fact 4- Sandra went back to the bathroom. Question: Where is Mary? Answer: hallway


Output: Fact 2