<http://schema.org/keywords>
"canon 550d, autumn leaves, river thames, st paul's, south bank, london 2012, autumn in london, kissing on the street, couple on the street, benches, cathedral, embankment, historical, hugging, lantern, lights, london, love, river, thames"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/21484825/autumn-flowers-by-liubov-terletska>