<http://schema.org/description>
"Mayor of London Sadiq Khan launches the Night Tube, three years after it was announced by his predecessor Boris Johnson. ."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.express.co.uk/news/uk/718581/Night-Tube-extension-Jubilee-line-runs-all-night-weekend-TFL-London>