<http://schema.org/description>
"Regular printers are pretty handy, but their up-and-coming cousins, 3-D printers, add a whole new dimension to the  printing process. Literally! How much do you know about the fascinating field of 3-D printing? Take this quiz and find out!"^^<http://www.w3.org/2001/XMLSchema#string>
<http://computer.howstuffworks.com/3-d-printing-quiz3.htm>