What is the lowest number of Against that Lake Wendouree had when they had more than 7 Losses?
CREATE TABLE "2001_ladder" (
  "ballarat_fl" text,
  "wins" real,
  "byes" real,
  "losses" real,
  "draws" real,
  "against" real
);
SELECT MIN("against") FROM "2001_ladder" WHERE "ballarat_fl"='lake wendouree' AND "losses">7;