<http://schema.org/headline>
"Twitter for Android and iOS get photo tagging for up to 10 people and ability to add up to 4 photos in a tweet"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2014/03/26/twitter-android-ios-get-photo-tagging-ability-include-four-photos-tweet/>