<http://schema.org/description>
"The Polikarpov I-16 is one of the most unsung aircraft in history. Although somewhat difficult to fly, the I-16&amp;#039;s speed, high roll-rate, and rate of climb earned it production status. Learn more details of this long-lived, underdog fighter plane."^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/polikarpov-i-16.htm>