Prompt
"Generate a serene landscape image of River Stour, a 76 km long river in England, flowing gently through the picturesque Dedham Vale and Constable Country, with lush greenery and possibly a few sailboats or kayaks, near the town of Sudbury, under a clear blue sky with a few puffy white clouds, in a realistic and impressionistic style reminiscent of John Constable's paintings."