<http://schema.org/target>
"http://www.americanrivers.org?s={search_term_string}"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.americanrivers.org/blog/chat-live-with-secretary-salazar-on-americas-great-outdoors-june-10-at-2-p-m-edt/>