Complex sentence: McCartney finally admitted his role to journalist Peter Palmiere at a Los Angeles press conference on 27 November 1989 during his world tour: What a great question to end the conference.
Split into simpler sentences: McCartney finally admitted his role to journalist Peter Palmiere at a Los Angeles press conference on 27 November 1989 during his world tour. McCartney told Palmiere: What a great question to end the conference.