<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://osc.org/index.php?option=com_content&view=article&id=1018:astronaut-robert-springer-space-inspired-talk-photos&catid=162:space-junk-3d&Itemid=229>