<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/Astrophel-and-Stella/GBES9jcg50mazYuKE993Cw?MixID=GBES9jcg50mazYuKE993Cw&PageNumber=1>