text: {"answer": "mountains", "query": "What is the background?", "question_id": 498511001, "contrast_sets": [{"mutex_answer": "trees", "mutex_caption": "A horse eating in a field with trees in the background."}, {"mutex_answer": "snow", "mutex_caption": "A horse eating in a field with snow in the background."}, {"mutex_answer": "rocks", "mutex_caption": "A horse eating in a field with rocks in the background."}, {"mutex_answer": "alpine meadow", "mutex_caption": "A horse eating in a field with alpine meadow in the background."}], "caption": "A horse eating in a field with mountains in the background.", "image_id": 498511, "id": 455, "file_name": "COCO_val2014_000000498511.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000498511.jpg", "flickr_url": "http://farm2.staticflickr.com/1114/1186211301_080830406a_z.jpg", "license": 3, "height": 500, "width": 334}