text: {"answer": "brick", "query": "What material is the building made of?", "question_id": 291932002, "contrast_sets": [{"mutex_answer": "stone", "mutex_caption": "a pair of shoes on a bench next to a stone wall"}, {"mutex_answer": "concrete", "mutex_caption": "a pair of shoes on a bench next to a concrete wall"}, {"mutex_answer": "stucco", "mutex_caption": "a pair of shoes on a bench next to a stucco wall"}], "caption": "a pair of shoes on a bench next to a brick wall", "image_id": 291932, "id": 760, "file_name": "COCO_val2014_000000291932.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000291932.jpg", "flickr_url": "http://farm9.staticflickr.com/8477/8264297173_c73a7b3d8d_z.jpg", "license": 3, "height": 427, "width": 640}