text: {"answer": "horse", "query": "What kind of animal is this?", "question_id": 510877002, "contrast_sets": [{"mutex_answer": "zebra", "mutex_caption": "Two zebras grazing in a field with trees in the background", "mutex_detection": "zebra"}, {"mutex_answer": "elk", "mutex_caption": "Two elks grazing in a field with trees in the background", "mutex_detection": "elk"}, {"mutex_answer": "sheep", "mutex_caption": "Two sheeps grazing in a field with trees in the background", "mutex_detection": "sheep"}], "caption": "Two horses grazing in a field with trees in the background", "image_id": 510877, "detection": "horse", "boxes": [[44.72, 301.4, 121.39, 128.28], [1.38, 30.06, 489.33, 595.77]], "id": 597, "file_name": "COCO_val2014_000000510877.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000510877.jpg", "flickr_url": "http://farm1.staticflickr.com/74/167684267_9ceed6df9e_z.jpg", "license": 4, "height": 640, "width": 529}