Question: Which Twenty Million Sweethearts actress was widely known for performing in RKO's musical films?
Sentence (from "Ginger Rogers"): Ginger Rogers (born Virginia Katherine McMath; July 16, 1911 – April 25, 1995) was an American actress, dancer, and singer, widely known for performing in films and RKO's musical films, partnered with Fred Astaire.
Relevant evidence: Yes