<http://schema.org/query-input>
"required name=search_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.centralpoint.nl/pda-stylus-pennen/gembird/stylus-2-1-eingabestif-gembird-m-kogelschreiber-zwart-silb-art-tap054064-num-5324239/>