<http://schema.org/about>
"This gadget probably won't sell as much as the iPhone with which is shares some design cues, but can your fancy touch-screen phone give you information about your biodiesel (at least until Apple's next software update)? Total glycerin, acid numbers,"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/i-spec-q-100-a-biodiesel-analyzer-in-your-pocket.html>