Question: Which of the writers of the song "Bop Bop Baby" was born 5 July 1979?
Sentence (from "Sergio Pupovac"): Sergio Pupovac, also known as Serdo or Serdjio Pupovac (born 5 July 1979) is a French-born Luxembourgian footballer, who currently plays in Luxembourg for FC UNA Strassen.
Relevant evidence: No