{"answers": "C", "options": ["f : you knew nothing about einstein 's childhood except that he studied piano at age 5 .", "f : that 's what i heard too . einstein started to learn violin at the age of 13 .", "f : that 's quite young at the age of 6 and 13 to learn violin . but how did you know that ?", "f : how did you know that einstein start to learn piano at the age of 6 and 13 ?"], "article": "f : what do you know about einstein 's childhood ? m : he studied the violin between the age of 6 and 13 .", "id": "train_3902"}