To date, schema.org has supported relatively simple relations between entities. For example, if we wanted to describe Joe Montana as an athlete on the San Francisco 49ers team, we might represent this using the newly proposed "athlete" property of a SportsTeam. This is a pretty clear structure, but it doesn't offer anywhere to attach further information about the relationship. Building on our ex
![Introducing 'Role'](https://cdn-ak-scissors.b.st-hatena.com/image/square/2766eabfb3450ae6e005aa281fe5423659dfefd7/height=288;version=1;width=512/http%3A%2F%2F1.bp.blogspot.com%2F-h-nBek0AUlk%2FU58Xo-yuc_I%2FAAAAAAAAI5M%2FORErxieZ7Fg%2Fw1200-h630-p-k-no-nu%2Fsdo-sports-image0.png)