<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/Programming-HTML5-Applications/lUs2XGZvME6z_Ji73Zm3iA?MixID=lUs2XGZvME6z_Ji73Zm3iA&PageNumber=1>