<http://schema.org/about>
"It sometimes seems that researchers will try to turn anything into biofuels these days. One new feedstock being tested, in Spain, is the leftover pits from olives after the fruit is pressed into olive oil or, (gasp) de-stoned before being"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/renewable-energy/4-million-tons-of-olive-pits-could-be-turned-in-ethanol.html>