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.

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

Passage: Fact 1- John went back to the garden. Fact 2- John travelled to the hallway. Question: Where is John? Answer: hallway
Fact 2

Passage: Fact 1- Sandra journeyed to the hallway. Fact 2- Mary moved to the bedroom. Fact 3- Mary went back to the office. Fact 4- Sandra moved to the bedroom. Question: Where is Mary? Answer: office

Fact 3