<http://schema.org/description>
"A navigation system that helps pilots make safe descents was turned off at San Francisco airport on Saturday when a South Korean airliner crashed and burned after undershooting the runway, officials said."^^<http://www.w3.org/2001/XMLSchema#string>
<http://in.reuters.com/article/usa-crash-glidepath-idINDEE96601X20130707>