<http://schema.org/description>
"Mushers lead sled dogs on long-distance races. They have to endure freezing temperatures, avoid hostile predators, cross treacherous environments and navigate through hundreds of miles of open Alaskan wilderness. Do you have what it takes to be a musher and lead a team of sled dogs to victory? Take this quiz to find out."^^<http://www.w3.org/2001/XMLSchema#string>
<http://adventure.howstuffworks.com/destinations/summer-travel-families/alaska-dog-sledding-quiz9.htm>