CREATE TABLE "asian_tour_wins_13" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);

Question: What is the date of the 4 strokes margin of victory?
SQL: SELECT "date" FROM "asian_tour_wins_13" WHERE "margin_of_victory"='4 strokes';

Question: What is the date of the 4 strokes margin of victory?
SQL: SELECT "date" FROM "asian_tour_wins_13" WHERE "margin_of_victory"='4 strokes';