<http://schema.org/topics>
"Apps and Software,cab,Dev &amp; Design,Gadgets,Mobile,new york,taxis,Tech,Transportation,Travel,Travel &amp; Leisure,Uncategorized,U.S.,Work &amp;amp; Play"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2013/11/11/high-tech-cab/>