<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://workingperson.com/workwear-1/shirts/under-armour-shirts/under-armour-shirts-men-s-heatgear-polo-shirt-1000490-414-navy-113760.html>