<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.cambodiaun.org/?option=com_content&view=article&id=295:statement-by-hedr-sea-kosal-13-december-2012-&catid=87:201212&Itemid=68>