Who were the 2nd group scorers that were opponents of olympiacos?
CREATE TABLE "group_stage" (
  "date" text,
  "opponents" text,
  "result_f_a" text,
  "scorers" text,
  "attendance" real,
  "group_position" text
);
SELECT "scorers" FROM "group_stage" WHERE "group_position"='2nd' AND "opponents"='olympiacos';