{"answers": "B", "options": ["f : the total area of the forbidden city in tianjin is 150000 square metres . how wonderful !", "f : the total area of the forbidden city is 150000 square metres . how wonderful !", "f : the total area of beijing is 15000 square metres and the forbidden city is about 1000 square metres . how wonderful !", "f : the total area of the forbidden city in tianjin is 9000 square metres . how wonderful !"], "article": "f : i 'm going to china to visit places of interest . do you know many ? m : oh , i know a little about the forbidden city , located in the center of beijing . it covers an area of 150,000 square meters and has 9000 rooms .", "id": "train_5630"}