<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.genengnews.com/keywordsandtools/download.aspx?file=%2Fmedia%2Faudio%2Fgencast%2Fgc253_3_5_2009.mp3&addonid=155>