<http://schema.org/description>
"Sheryl Sandberg, Facebook's second-in-command, has stopped short of apologizing for Facebook's psychological experiment on 700,000 unknowing users."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/Technology/2014/07/03/Sheryl-Sandberg-on-Facebook-newsfeed-experiment-We-never-meant-to-upset-you/8601404427674/>