text: {"answer": "train", "query": "What kind of transportation is shown?", "question_id": 515360002, "contrast_sets": [{"mutex_answer": "bus", "mutex_caption": "a yellow bus is at a bus station", "mutex_detection": "bus"}, {"mutex_answer": "car", "mutex_caption": "a yellow car is at a parking spot", "mutex_detection": "car"}], "caption": "a yellow train is at a train station", "image_id": 515360, "detection": "train", "boxes": [[120.27, 102.1, 317.58, 285.64]], "id": 1332, "file_name": "COCO_val2014_000000515360.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000515360.jpg", "flickr_url": "http://farm4.staticflickr.com/3728/9550524523_b196a6aae5_z.jpg", "license": 3, "height": 420, "width": 640}