Which Avg/G that has a Name of opponents, and an Effic smaller than 129.73?
CREATE TABLE "passing" (
  "name" text,
  "gp_gs" text,
  "effic" real,
  "cmp_att_int" text,
  "avg_g" real
);
SELECT SUM("avg_g") FROM "passing" WHERE "name"='opponents' AND "effic"<129.73;