<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ticketmonster.com/buy-Frosty-The-Snowman-tickets-at-Fletcher-Opera-Theatre---Progress-Energy-Center-Raleigh-NC-11-30-2013/2751>