Generate a sentence that describes the following data: Ethiopia, leader, Hailemariam Desalegn; Addis Ababa, isPartOf, Addis Ababa Stadium; Addis Ababa City Hall, location, Addis Ababa; Addis Ababa, country, Ethiopia
Both Addis Ababa Stadium and City Hall are located in Addis Ababa, Ethiopia, whose leader is Hailemariam Desalegn.