<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.gelderlander.nl/regio/achterhoek/berkelland/74-jarige-man-komt-om-bij-ongeval-op-boerderij-in-beltrum-1.6133233>