<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.mironet.cz/22quot-lenovo-t2254-tn-1680-x-1050-1610-5ms-250-cdm2-10001-vgadvi-cerny+dp234011/>