<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.biobiochile.cl/noticias/2015/06/26/bachelet-responde-a-manifestantes-yo-tambien-estoy-comprometida-con-la-educacion-publica.shtml>