List down the territory IDs, descriptions and region description which are under the in-charge of Nancy Davolio,
descriptions refers to TerritoryDescription; region refers to RegionDescription
SELECT T3.RegionID, T3.TerritoryDescription, T4.RegionDescription FROM Employees AS T1 INNER JOIN EmployeeTerritories AS T2 ON T1.EmployeeID = T2.EmployeeID INNER JOIN Territories AS T3 ON T2.TerritoryID = T3.TerritoryID INNER JOIN Region AS T4 ON T3.RegionID = T4.RegionID WHERE T1.LastName = 'Davolio' AND T1.FirstName = 'Nancy'