<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://eichikawa.com/2012/12/siria-eeuu-o-democracias-mundiales-no-hacen-falta-100-paises-aliados-el-problema-es-conseguir-1-y-medio.html>