<http://schema.org/about>
"McDonald's was quick to drop the supplier once conditions were exposed, but there's no reason to think conditions aren't similar at any of its other suppliers."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/more-footage-dead-birds-share-cages-egg-laying-hens-and-more-had-your-egg-mcmuffin-today.html>