Complex sentence: He served in the successive cabinets of Tadeusz Mazowiecki, Jan Krzysztof Bielecki, Jan Olszewski and Hanna Suchocka and was the first Minister of Foreign Affairs of the Third Republic of Poland.
Split into simpler sentences: He served in the successive cabinets of Tadeusz Mazowiecki, Jan Krzysztof Bielecki, Jan Olszewski and Hanna Suchocka. He was the first Minister of Foreign Affairs of the Third Republic of Poland.