Which Att-Cmp has a GP-GS of 7-1?
CREATE TABLE "passing" (
  "name" text,
  "gp_gs" text,
  "effic" real,
  "att_cmp" text,
  "td_int" text,
  "avg_g" real
);
SELECT "att_cmp" FROM "passing" WHERE "gp_gs"='7-1';