<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.travelocity.com/Cruises?fromDay=&toDay=&toYearMonth=2014-07&WA3=deal_alert&Service=TRAVELOCITY&WA2=CFD&WA5=IM&fromYearMonth=2014-03&cruiseId=80641>