<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bd.nl/regio/waalwijk-heusden-e-o/heusden/nieuw-vaarboek-van-ron-van-der-most-uit-heusden-1.6423145>