<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.theclassyhome.com/Product/GL-U9303-BUR-R-S-M/Transitional+Burgundy+PU+Reclining+Sofa+w/Plush+Padded+Headrest>