text: {"answer": "trucks", "query": "What vehicles are on the street?", "question_id": 471446001, "contrast_sets": [{"mutex_answer": "bus", "mutex_caption": "a bus on a street next to a van ", "mutex_detection": "bus"}, {"mutex_answer": "car", "mutex_caption": "a car on a street next to a van ", "mutex_detection": "car"}], "caption": "a truck on a street next to a van ", "image_id": 471446, "detection": "truck", "boxes": [[364.13, 156.82, 36.86, 41.38], [274.45, 106.05, 91.33, 104.67]], "id": 1445, "file_name": "COCO_val2014_000000471446.jpg", "coco_url": "http://images.cocodataset.org/val2014/COCO_val2014_000000471446.jpg", "flickr_url": "http://farm6.staticflickr.com/5050/5259447620_4fd48f12f9_z.jpg", "license": 5, "height": 426, "width": 640}