<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mtlurb.com/forums/showthread.php/6860-Une-nouvelle-l%C3%A9gende-est-n%C3%A9e!!!-Canon-5D-Mark-II/page4>