Detailed Instructions: You will be given a passage consisting of set of facts and a question as input. The task is to answer a question of form 'Where is <person_name>?' using one of the given facts to determine the latest location of the person. Answer should be a word/phrase describing the location from the supporting fact. Avoid answers that are incomplete or incorrect.
Q: Passage: Mary went to the bathroom. John travelled to the hallway. John moved to the kitchen. Mary went back to the hallway. Daniel went back to the bedroom. Mary journeyed to the garden. Mary went back to the office. Daniel went back to the bathroom. Sandra moved to the hallway. John went back to the bedroom. Question: Where is Mary?
A:
office