Which season has the Werder Bremen Club and is in Round 2r?
CREATE TABLE "european_record" (
  "season" text,
  "competition" text,
  "round" text,
  "club" text,
  "1st_leg" text,
  "2nd_leg" text
);
SELECT "season" FROM "european_record" WHERE "club"='werder bremen' AND "round"='2r';