Question: Sunny Side of Life was a film that focused on the children of which musician?
Sentence (from "A. P. Carter"): Alvin Pleasant Delaney Carter (December 15, 1891 – November 7, 1960) professionally recording as A.P. Carter, was an American musician and founding member of The Carter Family, one of the most notable acts in the history of country music.
Relevant evidence: Yes