text: {"answer": "train", "query": "What type of vehicle is this?", "question_id": 264753002, "contrast_sets": [{"mutex_answer": "bus", "mutex_caption": "A bus is stopped at an empty bus station.", "mutex_detection": "bus"}, {"mutex_answer": "trolley", "mutex_caption": "A trolley is stopped at an empty train station.", "mutex_detection": "trolley"}, {"mutex_answer": "rail car", "mutex_caption": "A rail car is stopped at an empty train station.", "mutex_detection": "rail car"}, {"mutex_answer": "locomotive", "mutex_caption": "A locomotive is stopped at an empty train station.", "mutex_detection": "locomotive"}], "caption": "A train is stopped at an empty train station.", "image_id": 264753, "detection": "train", "boxes": [[0.0, 180.63, 461.65, 182.52]], "id": 625, "file_name": "COCO_val2014_000000264753.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000264753.jpg", "flickr_url": "http://farm4.staticflickr.com/3819/10122709484_2903cf3fb3_z.jpg", "license": 4, "height": 423, "width": 640}