<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://eichikawa.com/2012/12/en-busca-de-un-enviado-especial-en-eeuu-para-que-trate-el-caso-alan-gross-con-el-gobierno-cubano.html>