<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.peta.org/?ReturnUrl=%2Fmediacenter%2Fnews-releases%2FPETA-Names-the-Top-Five-Ads-of-Super-Bowl-XLIV.aspx>