Which Races has a T.C. of 3rd, and a D.C. of 7th?
CREATE TABLE "gp2_series" (
  "year" real,
  "drivers" text,
  "races" real,
  "wins" real,
  "poles" real,
  "f_l" real,
  "points" real,
  "d_c" text,
  "t_c" text
);
SELECT MIN("races") FROM "gp2_series" WHERE "t_c"='3rd' AND "d_c"='7th';