In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

Billy McKee ( ; 12 November 1921 – 11 June 2019 ) was an Irish republican .
Billy McKee ( ; 12 November 1921 – 11 June 2019 ) was an Irish republican and a founding member and leader of the Provisional Irish Republican Army ( PIRA ) .