<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.gelderlander.nl/regio/achterhoek/berkelland/nest-met-vijf-kittens-gedumpt-bij-brievenbus-in-neede-video-1.6520157>