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- Sandra went to the bedroom. Fact 2- Mary moved to the bedroom. Question: Where is Mary? Answer: bedroom
Fact 2

Passage: Fact 1- John journeyed to the garden. Fact 2- John travelled to the office. Fact 3- Mary travelled to the hallway. Fact 4- John journeyed to the bedroom. Question: Where is John? Answer: bedroom
Fact 4

Passage: Fact 1- Sandra travelled to the hallway. Fact 2- Mary moved to the office. Question: Where is Sandra? Answer: hallway

Fact 1