<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/Works-Of-Robert-Frost-150/DROeoaBQ-Uar-evPMKeaFQ?MixID=DROeoaBQ-Uar-evPMKeaFQ&PageNumber=1>