<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ticketmonster.com/buy-Milwaukee-Ballet-The-Nutcracker-tickets-at-Uihlein-Hall-at-Marcus-Center-Milwaukee-WI-12-14-2014/520168>