<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.mironet.cz/dell-inspiron-15-7559-156quot-fhd-i56300hq-8gb-1tb-sshd-gtx-960m-4gb-w10p-3ynbd+dp293642/>