Assertion: contralto's role | /r/HasProperty | mature female
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text: The lowest of the female voice types, the contralto is most often found in mature female roles, ranging from the wild and temperamental (Klytämnestra in Strauss’ Elektra, the Sorceress in Dido and Aeneas) to the dignified and noble (Erda in Wagner's Ring cycle, Cornelia in Handel's Giulio Cesare).