<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/10201199/kemeralt%25C4%25B1-%25C3%2587ar%25C5%259F%25C4%25B1s%25C4%25B1-%25C4%25B0zmir-kemeralt%25C4%25B1-shopping-market-%25C4%25B0zmir-by-erdal-uzer>