<http://schema.org/about>
"I just got off a conference call with Secretary of Energy Steven Chu, in which he discussed the vision for clean energy President Obama put forth in last night's State of the Union address. In that"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/steven-chu-solar-should-be-4-times-cheaper-by-2020.html>