<http://schema.org/keywords>
"yellow, red, sea, sunset, color, blue, clouds, new york, evening, pier, nyc, empire state building, afternoon, golden hour, manhatten, sky scraper"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/10751031/nyc-ii-by-y-b>