<Li> Senate <Dl> <Dd> Chairman: Raza Rabbani </Dd> <Dd> Deputy Chairman: Abdul Ghafoor Haideri </Dd> </Dl> </Li> <Dl> <Dd> Chairman: Raza Rabbani </Dd> <Dd> Deputy Chairman: Abdul Ghafoor Haideri </Dd> </Dl> <Dd> Chairman: Raza Rabbani </Dd> <Dd> Deputy Chairman: Abdul Ghafoor Haideri </Dd>

What is the purpose of senate in pakistan