<http://schema.org/keywords>
"sooc, auto, street, travel, car, urban, nikon, london, photo, taxi, strada, driver, visa, d7000, londra, taxi driver, viaggi, chaffeur"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/17295737/taxi-driver-by-filippo-bianchi>