<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.osc.org/index.php/images/templates/images/stories/templates/index.php?option=com_content&view=article&id=815:learn-climate-change&catid=129:earth-day&Itemid=232>