<http://schema.org/category>
"web ready license"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/18301713/untitled-by-%25D0%25A1%25D0%25B5%25D1%2580%25D0%25B3%25D0%25B5%25D0%25B9-%25D0%25A1%25D0%25B5%25D1%2580%25D0%25B3%25D0%25B5%25D0%25B8%25D1%2587>