Complex sentence: Bern, the federal capital of Switzerland, is part of the Canton of Bern, of which it is also capital; in the Federal Assembly, it is represented by 25 members in the National Council and two in the Council of States.
Split into simpler sentences: Bern, the capital of Switzerland, is part of the Canton of Bern, of which it is also capital. In the Federal Assembly, it is represented by 25 members in the National Council and two in the Council of States.