text: {"answer": "grass", "query": "What are the zebras standing on?", "question_id": 6688002, "contrast_sets": [{"mutex_answer": "sand", "mutex_caption": "Two zebra's standing in a sandy field and one is eating grass."}, {"mutex_answer": "leaves", "mutex_caption": "Two zebra's standing in a leafy field and one is eating grass."}, {"mutex_answer": "hay", "mutex_caption": "Two zebra's standing in a hay field and one is eating hay."}], "caption": "Two zebra's standing in a grassy field and one is eating grass.", "image_id": 6688, "id": 66, "file_name": "COCO_val2014_000000006688.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000006688.jpg", "flickr_url": "http://farm5.staticflickr.com/4096/4737717909_19d95afb32_z.jpg", "license": 1, "height": 428, "width": 640}