text: {"answer": "grass", "query": "What is on the ground?", "question_id": 529020001, "contrast_sets": [{"mutex_answer": "dirt", "mutex_caption": "A big dirt field near some very big buildings."}], "caption": "A big grass field near some very big buildings.", "image_id": 529020, "id": 792, "file_name": "COCO_val2014_000000529020.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000529020.jpg", "flickr_url": "http://farm5.staticflickr.com/4075/5443257968_a946ca5d7e_z.jpg", "license": 6, "height": 402, "width": 640}