<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Health_News/2013/03/01/BPA-found-in-cans-linked-to-asthma/UPI-50301362198082/?spt=mps&or=2>