<http://schema.org/description>
"Flight has been a human dream for centuries. It wasn&amp;#039;t until the dawn of the 20th century that man was finally able to leave the ground. This gallery highlights some of the milestones in aviation."^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/transport/flight/modern/flight-pictures.htm>