Who is runner-up where the winning score is –6 (65-70-70-69=274) and the margin of victory is 3 strokes?
CREATE TABLE "european_tour_wins_14" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "runner_s_up" FROM "european_tour_wins_14" WHERE "margin_of_victory"='3 strokes' AND "winning_score"='–6 (65-70-70-69=274)';