<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.abt.com/product/50533/Maytag-MFI2670X-Monochromatic-Stainless-Steel-French-Door-Bottom-Freezer-Refrigerator-MFI2670XEM.html>