<http://schema.org/about>
"In a talk held with international media, Brazil's chief negotiator at Rio+20 emphasized the focus of the event will be on development that makes economic and social sense, but recognized the need for new growth indicators."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/environmental-policy/rio-plus-20-not-to-be-Idealistic-will-seek-achievable-goals-says-brazil-climate-negotiator.html>