<http://schema.org/description>
"Clutches are in many things that you see or use everyday. The car you drive is just one example. If you drive a manual transmission car, you may be surprised to find out that it has more than one clutch. If you drive an automatic transmission car, well, you have clutches, too. How much do you know about clutches?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://auto.howstuffworks.com/clutch-quiz5.htm>