<http://schema.org/alternativeHeadline>
"Google launches 2D physics library LiquidFun, Google Play games plugin for Unity, and new game categories"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/dd/2013/12/11/google-launches-2d-physics-library-liquidfun-google-play-games-plugin-unity-new-games-categories/>