<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.burbuja.info/inmobiliaria/burbuja-inmobiliaria/301982-holanda-connection-fitch-avisa-hogares-holandeses-endeudados-249-de-ingresos-4.html>