What is the Date for the wgc-accenture match play championship?
CREATE TABLE "european_tour_wins_7" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "to_par" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "date" FROM "european_tour_wins_7" WHERE "tournament"='wgc-accenture match play championship';