What was the date of the match with a winning score of –7 (67-72-69-69=277)?
CREATE TABLE "lpga_tour_wins_13" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "date" FROM "lpga_tour_wins_13" WHERE "winning_score"='–7 (67-72-69-69=277)';