I want to know the answer to the following question:
What were the names of the three brothers that rulled Novgotod, Beloozero, and Izborsk?
All the background I'm provided with is that "The three brothers—Rurik, Sineus, and Truvor—established themselves in Novgorod, Beloozero, and Izborsk, respectively.". Is that enough to answer the question?