<http://schema.org/description>
"Facebook has introduced a new feature for advertisers that allows them to target ads to users on a specific type of mobile network (2G/3G/4G), thereby ensuring that creative campaigns ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2014/08/27/facebook-introduces-bandwidth-targeting-advertisers-help-reach-mobile-users-around-world/>