Complex sentence: Soyer was born in Paris, and first studied privately with G. Daum, before entering the Paris Conservatory at age 19, where he was a pupil of Georges Jouatte and Louis Musy.
Split into simpler sentences: Soyer was born in Paris, and first studied privately with G. Daum, before entering the Paris Conservatoire at the age of 19. There he was a pupil of Georges Jouatte and Louis Musy.