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- Mary went back to the hallway. Fact 2- Sandra journeyed to the bedroom. Fact 3- Sandra travelled to the kitchen. Fact 4- John went back to the hallway. Fact 5- Daniel went back to the office. Fact 6- Mary moved to the kitchen. Fact 7- Daniel went back to the bathroom. Fact 8- Daniel travelled to the office. Fact 9- Daniel went to the hallway. Fact 10- Daniel went to the bathroom. Question: Where is Daniel? Answer: bathroom
Fact 10