<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/The-Princess-Cleves-The-Original/vSR54Bj3nUi0wEadnu-M8w?MixID=vSR54Bj3nUi0wEadnu-M8w&PageNumber=1>