{"answers": "A", "options": ["m : how many books can i borrow at a time ?", "m : thanks , i 'd like to deposit 5,000 yuan .", "m : i 'd like to return these five books .", "m : i want to buy all these books , how much are they ?"], "article": "f : good afternoon , how can i help you ? m : i want to borrow some books , but i do n't have a card . can i apply for one ? f : sure , please fill out the form .", "id": "train_4723"}