{"answers": "B", "options": ["f : ok , but i need to tell you that it will be tired if you really choose to go the meeting hall on foot .", "f : ok , and it is indeed convenient to go to the meeting hall by underground .", "f : ok , but i need to tell you that it is very expensive to go the meeting hall by car .", "f : ok , and it is indeed convenient to go to the shopping mall by underground ."], "article": "f : i will drive to the meeting hall . will you go with me ? m : thank you . but i have to finish my paper . i 'll walk to the underground station and go there by underground .", "id": "train_5834"}