<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://eichikawa.com/2013/01/oficina-de-marco-rubio-el-senador-no-esta-prejuiciado-con-chuck-hagel-para-la-secretaria-de-defensa.html>