<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/First-Plane/n-kh4IS6mkec4Fd0ZrgkWA?MixID=n-kh4IS6mkec4Fd0ZrgkWA&PageNumber=1>