<http://schema.org/category>
"products for resale license"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/15754541/sunset-by-%25D0%2590%25D0%25BD%25D0%25B0%25D1%2582%25D0%25BE%25D0%25BB%25D0%25B8%25D0%25B9-%25D0%2591%25D0%25B0%25D1%2580%25D0%25B4%25D1%2583%25D0%25BA%25D0%25BE%25D0%25B2>