<http://schema.org/description>
"An international treaty was signed in 1972 to identify and protect some of the world&amp;#039;s most important cultural and natural sites. As the name implies, these sites belong to everybody, so let&amp;#039;s help to preserve them. Take this quiz to learn more about World Heritage sites."^^<http://www.w3.org/2001/XMLSchema#string>
<http://adventure.howstuffworks.com/world-heritage-site-quiz11.htm>