<http://schema.org/about>
"A new electric bike from Germany called the Swingtrike promises greater stability for those who may be concerned with balancing issues. The pedal-assist bike is powered by a front wheel three-speed hub motor, but can be upgraded to"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/electric-bike-for-novices-sports-three-wheels.html>