<http://schema.org/headline>
"Google confirms SMS integration is \u2018coming soon\u2019 to Hangouts, outgoing calls also planned"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2013/05/16/googles-hangouts-service-will-rival-imessage-with-support-for-sms-google-play-listing-reveals/>