<http://schema.org/keywords>
"portrait, female portrait, model, nude, etorika, image, smile, lips, facial expressions, eyes, face, girl, soul, Studio by Igor Volgin, www.ivolgin.com"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/16656425/helen-by-igor-volgin>