{"answers": "B", "options": ["m : you mean i need to buy the key before using the restroom ?", "m : you mean i need to buy something before using the restroom ?", "m : you mean i need to look for the keys by myself ?", "m : you mean i need to wait the staff only toilet for a while ?"], "article": "m : i need to use the restroom , but the door is locked . no one is in there because i already knocked on the door . can you give me the key ? f : well , the restroom is for customers only . you 'll need to buy something before i can give it to you .", "id": "train_5450"}