René's URL Explorer Experiment

            {
                "@context": "http://schema.org",
                "@type": "WebSite",
                "url": "https://www.ipc-computer.de/",
                "potentialAction": {
                    "@type": "SearchAction",
                    "target": "https://www.ipc-computer.de/advanced_search_result.php?keywords={search_term_string}",
                    "query-input": "required name=search_term_string"
                }
            }