<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/ebook/the-undead-world-of-oz-l-frank-baum-s-the-wonderful-wizard-of-oz-complete-with-zombies-and-monsters>