<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mightyrabbitstudios.com/?The-Proto-Cuneiform-Texts-From-Diverse-Collections--Materialien-Zu-Den-Fruhen-Schriftzeugnissen-Des-Vorderen-Ori-.pdf>