<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.peta.org/?ReturnUrl=%2Fb%2Fthepetafiles%2Farchive%2F2010%2F03%2F01%2FYou-Dont-Know-Jack-Hanna.aspx>