<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.abt.com/product/42140/Frigidaire-Left-Door-Hinge-Stainless-Steel-Top-Freezer-Refrigerator-FRT21HS6JK.html>