<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.mironet.cz/xerox-6614de-kompatibilni-inkoustova-kazeta-pro-hp-hp-deskjet-610c-615c-640c-656c-fax925xi-apollo-40ml-cerna+dp120022/>