Complex sentence: He was born in Michle (now part of Prague) and studied at the Prague Conservatoire with Otakar Ševčík, of whose technique he became the most famous representative.
Split into simpler sentences: He was born in Michle (now part of Prague) and studied at the Prague Conservatoire with Otakar Ševčík. He studied in Prague with Ševčik, of whose technique he became the most famous representative.