Complex sentence: The ballet company consists of 154 dancers, among them 17 Danseurs Étoiles, the Principal Dancers, giving 180 dance performances each year primarily at the Palais Garnier.
Split into simpler sentences: The ballet company consists of 154 dancers, among them 17 Danseurs Étoiles. The principal dancer give 180 dance performances each year, primarily at the Palais Garnier.