<http://schema.org/keywords>
"slussen, stockholm, sweden, long, exposure, slow, shutterspeed, city, town, lights, stripes, road, cars, water, boats, bus, reflections, bridge, night, canon, 600d, robin, dahling, photography, curves"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/3004808/stripes-in-the-night-by-robin-dahling>