Prompt
"Generate a serene landscape image of a short, 2.3-mile long river flowing through the towns of Dennis and Yarmouth in Barnstable County, Massachusetts, USA. The river, named Swan Pond River, should be depicted with its mouth open into Nantucket Sound. Capture the tranquil atmosphere of the riverbanks, with lush vegetation and possibly a few swans, reflecting the river's name. The image should be in a realistic style, focusing on the natural beauty of the river and its surroundings."