<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ezvacuum.com/vacuum-parts-by-machine-make-model/hoover-vacuum/hoover-upright-vacuum-parts/hoover-windtunnel-upright-self-propelled-vacuum-with-bag/hoover-y-vacuum-bags-4010100y-generic-9-pack-p-157.html>