TASK DEFINITION: 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.
PROBLEM: Passage: Fact 1- John went to the kitchen. Fact 2- John went to the hallway. Fact 3- Sandra moved to the garden. Fact 4- Sandra went back to the kitchen. Question: Where is Sandra? Answer: kitchen

SOLUTION: Fact 4

PROBLEM: Passage: Fact 1- Daniel went to the office. Fact 2- Mary went back to the bedroom. Question: Where is Mary? Answer: bedroom

SOLUTION: Fact 2

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

SOLUTION:
Fact 7