<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.garsonieres.gr/el/%ce%b3%ce%ba%ce%b1%cf%81%cf%83%ce%bf%ce%bd%ce%b9%ce%ad%cf%81%ce%b5%cf%82/>