<http://schema.org/description>
"BlackBerry today announced the launch dates for BBM for Android and BBM for iOS: September 21 and September 22, respectively. Previously an exclusive to BlackBerry smartphones, BBM ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2013/09/18/blackberry-messenger-coming-to-android-and-ios-on-september-21-and-22-respectively/>