<http://schema.org/target>
"http://www.peta.org/?s={search_term_string}"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.peta.org/?ReturnUrl=%2Fliving%2Fcompanion-animals%2FTellin-It-Like-It-Is-on-Pet-Stores.aspx>