<http://schema.org/keywords>
"texas politics"^^<http://www.w3.org/2001/XMLSchema#string>
<http://letterstotheeditorblog.dallasnews.com/2013/02/state-of-the-state-pro-and-con-its-clear-rick-perry-doesnt-care-kudos-to-his-support-for-stronger-infrastructure.html/>