<http://schema.org/description>
"History is often taught by country or region, making it tough to compare events happening at the same time around the world. Take our quiz to see how much you know about history, and when famous historical events took place."^^<http://www.w3.org/2001/XMLSchema#string>
<http://history.howstuffworks.com/historical-events/relative-history-quiz5.htm>