<http://schema.org/query-input>
"required name=search_keyword"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.sdna.gr/politiko-deltio/diethni/article/45276/kai-o-ntonalnt-tramp-ypopsifios-gia-xrisma-ton-repoymplikanon>