<http://schema.org/about>
" A good public transit system is one of the best ways to get cars off roads and people into buses and trains. London's system -- called the London Underground, or \"the Tube\" -- has been rolling along and expanding"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/treehugger-gets-personal-tour-of-london-subway-system.html>