<http://schema.org/description>
"Twitter has today announced that its Nielsen Brand Effect survey tool is available to all of its ad partners in the United States, United Kingdom and Japan. The tool, which presents ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2013/03/05/twitter-opens-up-native-cross-platform-nielsen-brand-effect-survey-tool-to-all-advertisers-in-us-uk-and-japan/>