{"answers": "D", "options": ["f : ok , 3 single tickets , $ 1500 please ,", "f : ok , give you 3 single tickets to washington , and you should pay $ 1300 .", "f : ok , three return tickets to washington , $ 2400 , please .", "f : ok , here are 3 return tickets , you should pay $ 2400 ."], "article": "m : excuse me , miss , is there a plane to new york ? f : uh , let me see . one just left half an hour ago and the next one will be in 2 hours . m : you mean it will take off at 11:00 o'clock . am i right ? f : yes , you are right . it will stop at washington for 10 minutes . do you want to buy your ticket now ? m : oh , yes . how much ? f : $ 500 each , single . and a return ticket is $ 800 . m : ok. give me 3 return tickets .", "id": "train_3203"}