<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/de-us/ebook/Game-Change-Obama-Clintons-McCain-Palin?bookId=031bbbae-0180-47c9-bded-651e8f2bf8ba>