<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.tradingunited.es/foro/estrategias-de-trading/12509-caracteristicas-de-tablet-operar-mt4.html?s=3bac93cd0b81914961225a405950423c>