Which First has Bats of r, and Throws of l, and a DOB of 12 october 1977?
CREATE TABLE "player_roster" (
  "surname" text,
  "first" text,
  "d_o_b" text,
  "bats" text,
  "throws" text,
  "position" text
);
SELECT "first" FROM "player_roster" WHERE "bats"='r' AND "throws"='l' AND "d_o_b"='12 october 1977';