text: {"answer": "train", "query": "What kind of vehicle is this?", "question_id": 365047002, "contrast_sets": [{"mutex_answer": "locomotive", "mutex_caption": "A locomotive moving along a track near a field.", "mutex_detection": "locomotive"}, {"mutex_answer": "rail car", "mutex_caption": "A rail car moving along a track near a field.", "mutex_detection": "rail car"}, {"mutex_answer": "trolley", "mutex_caption": "A trolley moving along a track near a field.", "mutex_detection": "trolley"}], "caption": "A train moving along a track near a field.", "image_id": 365047, "detection": "train", "boxes": [[139.21, 90.95, 352.68, 265.44]], "id": 517, "file_name": "COCO_val2014_000000365047.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000365047.jpg", "flickr_url": "http://farm4.staticflickr.com/3697/10076120914_a168099291_z.jpg", "license": 3, "height": 413, "width": 640}