What is the name of the venue where the opponent scored 51?
CREATE TABLE "schedule" (
  "game" real,
  "date" text,
  "opponent" text,
  "result" text,
  "packers_points" real,
  "opponents" real,
  "first_downs" real,
  "record" text,
  "streak" text,
  "venue" text,
  "attendance" real
);
SELECT "venue" FROM "schedule" WHERE "opponents"=51;