<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/ebook/Healing-Injuries-the-Natural-Way?bookId=4c32a403-dd17-469d-ace9-b4a9801e5e0c>