<http://schema.org/about>
"You always hear about how you should change to compact fluorescent lightbulbs and turn out the lights when you leave the room; with something like Motionbulb you can have both at the same time. A slick motion sensor is embedded in the bulb's housing,"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/motionbulb-the-motion-sensing-light-bulb.html>