CREATE TABLE "wins_6" (
  "year" real,
  "championship" text,
  "winning_score" text,
  "margin" text,
  "runner_s_up" text
);

Question: Which championship had a margin of 10 strokes?
SQL: SELECT "championship" FROM "wins_6" WHERE "margin"='10 strokes';

Question: Which runner-up player(s) had a margin of 10 strokes?
SQL: SELECT "runner_s_up" FROM "wins_6" WHERE "margin"='10 strokes';

Question: What was the most recent year that Kathy Ahern was a runner-up?
SQL: SELECT MAX("year") FROM "wins_6" WHERE "runner_s_up"='kathy ahern';