<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/Deadly-Little-Lessons/9DtAP6Wz20Gx4i3w0YM0xA?MixID=9DtAP6Wz20Gx4i3w0YM0xA&PageNumber=1>