text: {"answer": "skateboard", "query": "What is the person riding on?", "question_id": 107964002, "contrast_sets": [{"mutex_answer": "snowboard", "mutex_caption": "a man on a snowboard rides his board at the park", "mutex_detection": "snowboard"}, {"mutex_answer": "roller skates", "mutex_caption": "a man on a roller skates rides his skates at the park", "mutex_detection": "roller skates"}], "caption": "a man on a skateboard rides his board at the park", "image_id": 107964, "detection": "skateboard", "boxes": [[287.24, 228.85, 75.24, 38.39]], "id": 351, "file_name": "COCO_val2014_000000107964.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000107964.jpg", "flickr_url": "http://farm3.staticflickr.com/2642/3961261137_ac4b92bf12_z.jpg", "license": 2, "height": 425, "width": 640}