<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://forum.videohelp.com/threads/290800-My-DivX-DVD-Player-can-t-play-my-avi-DivX-xvid-video?p=1868037&viewfull=1>