Question: What type of opera singer was this Egyptian singer born in 1931 and performed in more than 500 opera performances and had a vocal range from approximately middle C to about two octaves above middle C?
Sentence (from "Ratiba El-Hefny"): Ratiba Hefny (Arabic رتيبة الحفنى ) (born 1931 in Cairo, Egypt, died 16 September 2013) was an Egyptian and an international Opera singer (Soprano) who has performed in more than 500 opera performances.
Relevant evidence: Yes