text: {"answer": "wood", "query": "What material are the chairs?", "question_id": 72752004, "contrast_sets": [{"mutex_answer": "metal", "mutex_caption": "A dining room table and four metal chairs."}, {"mutex_answer": "plastic", "mutex_caption": "A dining room table and four plastic chairs."}, {"mutex_answer": "cloth", "mutex_caption": "A dining room table and four cloth chairs."}, {"mutex_answer": "glass", "mutex_caption": "A dining room table and four glass chairs."}], "caption": "A dining room table and four wood chairs.", "image_id": 72752, "id": 821, "file_name": "COCO_val2014_000000072752.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000072752.jpg", "flickr_url": "http://farm4.staticflickr.com/3214/3156564515_5fb7c57595_z.jpg", "license": 3, "height": 500, "width": 375}