text: {"answer": "cow", "query": "Is this a cow or a bull?", "question_id": 577251004, "contrast_sets": [{"mutex_answer": "bull", "mutex_caption": "some big black bulls in  a grassy field", "mutex_detection": "bull"}, {"mutex_answer": "bear", "mutex_caption": "some big black bears in  a grassy field", "mutex_detection": "bear"}, {"mutex_answer": "sheep", "mutex_caption": "some big black sheeps in  a grassy field", "mutex_detection": "sheep"}], "caption": "some big black cows in  a grassy field", "image_id": 577251, "detection": "cow", "boxes": [[401.11, 208.94, 148.17, 163.17], [89.42, 96.72, 463.56, 300.12]], "id": 591, "file_name": "COCO_val2014_000000577251.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000577251.jpg", "flickr_url": "http://farm7.staticflickr.com/6015/6019230198_5ebd617540_z.jpg", "license": 1, "height": 480, "width": 640}