{"answers": "B", "options": ["f : yeah , the air will be so seriously polluted but we will be able to breathe normally . oh , let 's continue to talk about the air pollution .", "f : okay , i see . actually i agree with you . the airports take too much space . oh , let 's continue to talk about the transportation .", "f : so , you mean the airports take too much space but that does n't leave trains ? okay , i see . let 's continue to talk about the transportation .", "f : so , you mean we wo n't be able to use trains and the airports take too much space ? okay . let 's continue to talk about the road connection ."], "article": "m : talking about the twenty first century , i think there will be huge changes in the way people use cars . laws will be made about what kind of car you can own , and when you can use it . f : maybe there 'll just be too many of them on the roads . the air will be so seriously polluted that nobody will be able to breathe normally . m : exactly , people will have to rely on trains . f : why do you say that ? m : well , we wo n't be able to use cars and the airports take too much space . that leaves trains .", "id": "train_1959"}