<http://schema.org/description>
"There are many diseases out there you&amp;#039;ve never heard of. We&amp;#039;ve put together the top 20 diseases you&amp;#039;ve probably never heard of that are rare and unusual."^^<http://www.w3.org/2001/XMLSchema#string>
<http://health.howstuffworks.com/diseases-conditions/rare/20-diseases-you-never-heard-of7.htm>