What Championship has a Date of 26 may 1986?
CREATE TABLE "singles_5_3_2" (
  "outcome" text,
  "date" text,
  "championship" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score_in_the_final" text
);
SELECT "championship" FROM "singles_5_3_2" WHERE "date"='26 may 1986';