<http://schema.org/about>
"The Sierra Club is helping us stay alert to how much mercury we're eating in fish with a new app for iPhone and Android. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/gadgets/safe-sushi-app-tells-you-how-much-mercury-is-in-your-spicy-tuna-roll.html>