<http://schema.org/productID>
"sku:92418390"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.mironet.cz/qnap-ts251-intel-celeron-24ghz-1gb-ddr3l-2x-pozice-pro-pevne-diskyi-2x-glan-usb-30+dp221466/>