Complex sentence: Rudolf Zahradník (born October 20,1928 in Bratislava, then Czechoslovakia, now Slovakia) is a Czech chemist who studies the relationships between theoretical and experimental characteristics.
Split into simpler sentences: Rudolf Zahradník (born October 20,1928 in Bratislava, then Czechoslovakia, now Slovakia) is a Czech chemist. He has been particularly interested in the relationships between theoretical and experimental characteristics.