<http://schema.org/query-input>
"required name=search_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.centralpoint.nl/desktop-publishing/microsoft/microsoft-exchangeenterprisecal-2016-sngl-olp-1license-levelc-usrcal-withoutservices-art-pgi-00684-num-5695589/>