<http://schema.org/keywords>
"mountains, sun, sundown, mountain, alps, tirol, berge, alpen, gebirge, sonnenuntergang, s\u00C3\u00BCdtirol, alpenglow, tofane, South-Tyrol, gr\u00C3\u00B6den"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/6632159/glowing-dolomites-by-philipp-franceschini>