<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.peta.org/?ReturnUrl=%2Fliving%2Fpages%2Fliving_articles%2Funavailable.aspx%3Fname%3Dv-dog-contest%3FPageIndex%3D1>