Question: Which South Korean reality-variety show that airs on KBS2 was moved in 2013 from Wednesday nights and replaced by Star Family Show Mamma Mia?
Sentence (from "Happy Sunday"): In late November 2008, "Happy Sunday" had a revamp of its shows keeping "1 Night 2 Days" as the second segment and bringing back "Immortal Songs" which was previously liked by viewers.
Relevant evidence: No