<http://schema.org/description>
"The statistics are alarming: According to the World Association of Sleep Medicine, about 45 percent of the world&amp;#039;s population isn&amp;#039;t getting enough sleep."^^<http://www.w3.org/2001/XMLSchema#string>
<http://health.howstuffworks.com/mental-health/sleep/disorders/10-signs-you-may-be-sleep-deprived4.htm>