<http://schema.org/keywords>
"Br\u00C3\u00BCcke, Donau, Fluss, Rauch, V\u00C3\u00B6st, bridge, river, black and white, clouds, fume, smoke, wolken, danube, city, himmel, sky, wasser"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/6853389/steyregger-br%25C3%25BCcke-2-by-leo-p%25C3%25B6cksteiner>