<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.whatdigitalcamera.com/?1787-Olympus-E-PL1-Panasonic-Lumix-G-Vario-14-42mm-F3-5-5-6-MEGA-OIS-Lens&mode=hybrid>