<http://schema.org/about>
"Long before there was the petroleum-based plastic fruit cup, nature perfected its own biodegradable wrapper for keeping oranges fresh: the peel. But aside from adding a bit of zest to food or being used in the orange-smile gag, peels"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/orange-peels-could-one-day-power-your-car.html>