Question: Consider the opera company for which Jacqueline Royer sand leading contralto and mezzo-soprano. Who founded that company?
Sentence (from "Jacqueline Royer"): was a French opera singer who sang leading contralto and mezzo-soprano roles at the Opéra de Paris, London's Royal Opera House, the Teatro Colón in Buenos Aires, and the Opéra de Monte-Carlo.
Relevant evidence: Yes