{"answers": "D", "options": ["f : since you have no luggage to check in , you can go for security check .", "f : i 'm sorry . you 'll have to pay extra money for the second piece of luggage .", "f : just one piece of luggage , mr. smith ? you do n't have any carry-on bag ?", "f : put this piece of luggage on the belt , please . i need to look at its weight ."], "article": "m : hello . f : good morning , sir . welcome to london heathrow airport . where are you going ? m : i 'm going to taipei by way of hong kong . f : your passport and ticket , please . will you be checking in any banks , mr. lewis ? m : just one and i have this carry-on bag .", "id": "train_4201"}