<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.peta.org/?ReturnUrl=%2Ffeatures%2Fpages%2Ffeatures%2Funavailable.aspx%3Fname%3Dunited-airlines-baggage%3FPageIndex%3D26>