<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.abt.com/product/66518/KitchenAid-Professional-600-6-Quart-Bowl-Lift-Stand-Mixer-KP26M1XGC.html?tab=1>