<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.comtech.de/hifi-und-heimkino/dvd-und-blu-ray/blu-ray-player/samsung-ubd-k8500-ultra-hd-3d-blu-ray-player-schwarz>