<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.foroatletismo.com/foro/mundial-de-atletismo-berl-n-2009-a/7507-16-08-09-2-d-de-competici-n-2.html>