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 back to the kitchen. Fact 2- Sandra travelled to the bathroom. Question: Where is Sandra? Answer: bathroom
Fact 2

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

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. Fact 5- Daniel moved to the garden. Fact 6- Mary journeyed to the bedroom. Question: Where is John? Answer: bedroom

Fact 4