Part of what makes this open database unique is that it spans domains, but requires that a particular topic exist only once in Freebase -- even if it might normally be found in multiple databases. For example, Arnold Schwarzenegger would appear in a movie database as an actor, a political database as a governor, and in a bodybuilder database as a Mr. Universe. In Freebase, however, there is only one topic for Arnold Schwarzenegger that brings all these facets together. The unified topic is a single reconciled identity, which makes it easier to find and contribute information about the linked world we live in.