<http://schema.org/keywords>
"sky, sea, blue, north, horizon, sweden, skane, barseb\u00C3\u00A4ck"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/14375775/barseb%25C3%25A4ck-by-dan-pascu>