<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.oleole.pl/laptopy-i-netbooki/lenovo-thinkpad-e560-i7-6500u-8gb-1tb-r7-m370-w7-w10-pro.bhtml>