{"answers": "B", "options": ["m : thank you . this is a nice bank .", "m : thank you . this is a nice ticket office .", "m : thank you . this is a nice ticket office . please give me the air ticket .", "m : look ! the inner space of this train is big , and here is my seat ."], "article": "f : may i help you ? m : yes , when is the next train to london ? f : oh , let me check . it leaves in 20 minutes .", "id": "train_5387"}