Complex sentence: Olga Grjasnowa was born into a Russian-Jewish family in Baku, Azerbaijan, where her father Oleg Grjasnow practiced law and her mother Julija Winnikowa was a musicologist.
Split into simpler sentences: Olga Grjasnowa was born into a Russian-Jewish family in Baku, Azerbaijan. Her father, Oleg Grjasnow, practiced law and her mother, Julija Winnikowa, was a musicologist.