<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://kestnergesellschaft.de/en/?L=1&cHash=6e04d76e11c6f9e7bfd7bcd0f429d5dd&tx_cal_controller%5Bgetdate%5D=20140201&tx_cal_controller%5Bview%5D=month>