Which Tournament has a Winning score of e (72-69-71-68=280)?
CREATE TABLE "pga_tour_wins_15" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "tournament" FROM "pga_tour_wins_15" WHERE "winning_score"='e (72-69-71-68=280)';