{"answers": "C", "options": ["f : why do you think that cars will be the most common kind of transportation many years later ?", "f : i see . you believe that trains will change a lot while cars remain the same , so people would choose trains more often .", "f : oh , so you think people will rely on trains in the future ?", "f : you sound reasonable . people will have to take planes more often in the future ."], "article": "m : talking about the future . 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 they '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 .", "id": "train_2478"}