The colonial-era sources are not entirely clear or in agreement about the nature of the structure of the Inca government. However, its basic structure can be spoken of broadly, even if the exact duties and functions of government positions cannot be told. At the top of the chain of administration sat the Sapa Inca. Next to the Sapa Inca in terms of power may have been the Willaq Umu, literally the "priest who recounts", who was the High Priest of the Sun.However, it has been noted that beneath the Sapa Inca also sat the Inkap rantin, who was at the very least a confidant and assistant to the Sapa Inca, perhaps along the lines of a prime minister.[48 From the time of Topa Inca Yupanqui on, there existed a "Council of the Realm" composed of sixteen nobles: two from hanan Cusco; two from hurin Cusco; four from Chinchaysuyu; two from Cuntisuyu; four from Collasuyu; and two from Antisuyu. This weighting of representation balanced the hanan and hurin divisions of the empire, both within Cusco and within the Quarters (hanan suyukuna and hurin suyukuna).