<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ticketmonster.com/buy-Cirque-du-Soleil---The-Beatles-Love-tickets-at-Love-Theatre---Mirage-Las-Vegas-Las-Vegas-NV-10-06-2014/446491>