<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ticketmonster.com/buy-Elf-Khurafeh-Shrine-Circus-tickets-at-Peranis-Event-Center-Flint-MI-01-19-2014/72345>