<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/Trumpets-Sound-No-More/DLDc7QAgk0i1TMMGOikTgw?MixID=DLDc7QAgk0i1TMMGOikTgw&PageNumber=1>