<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/ebook/memoires-pour-servir-a-l-histoire-des-evenemens-de-la-fin-du-dix-huitieme-siecle-depuis-1760-4>