<http://schema.org/description>
"As we reported in March, Virgin media has sealed a deal to provide WiFi on the London Underground stations. That's not a complete system for a whole journey yet, but it's a good start ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/uk/2012/05/31/testing-of-virgin-medias-wifi-service-begins-on-londons-underground/>