 It is not known whether or not these were the actual Sumerians who are identified with the later Uruk culture.The rise of the city of Uruk may be reflected in the story of the passing of the gifts of civilization ("me") to Inanna, goddess of Uruk and of love and war, by Enki, god of wisdom and chief god of Eridu, may reflect the transition from Eridu to Uruk.The archaeological transition from the Ubaid period to the Uruk period is marked by a gradual shift from painted pottery domestically produced on a slow wheel to a great variety of unpainted pottery mass-produced by specialists on fast wheels.