text: {"answer": "train", "query": "What moving on tracks in the photograph?", "question_id": 270810006, "contrast_sets": [{"mutex_answer": "locomotive", "mutex_caption": "A long locomotive traveling past passengers on a platform.", "mutex_detection": "locomotive"}], "caption": "A long train traveling past passengers on a platform.", "image_id": 270810, "detection": "train", "boxes": [[7.19, 8.99, 350.92, 379.68]], "id": 442, "file_name": "COCO_val2014_000000270810.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000270810.jpg", "flickr_url": "http://farm8.staticflickr.com/7284/8715829490_f4fdf26549_z.jpg", "license": 4, "height": 640, "width": 432}