Complex sentence: Marguerite-Louise Odiot de Montroty, stage name Sophie Lothaire (born in 1732 in Paris) was a French dancer, actress and director who spent her whole career at the Théâtre de la Monnaie in Brussels.
Split into simpler sentences: Marguerite-Louise Odiot de Montroty, stage name Sophie Lothaire (born in 1732 in Paris) was a French dancer, actress and director. She spent her whole career at the Théâtre de la Monnaie in Brussels.