<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ticketmonster.com/buy-Illusions-Jan-Rouven-tickets-at-Starlite-Theatre---Riviera-Hotel--Casino-Las-Vegas-NV-06-15-2014/486949>