<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.abt.com/product/103688/Le-Creuset-4.5-Quart-Cherry-Round-Dutch-Oven-With-Gold-Knob-LS25012467SG.html>