What is the General classification for a points classification leader of Bradley Wiggins?
CREATE TABLE "jersey_progress" (
  "stage_winner" text,
  "general_classification" text,
  "mountains_classification" text,
  "points_classification" text,
  "combination_classification" text,
  "team_classification" text
);
SELECT "general_classification" FROM "jersey_progress" WHERE "points_classification"='bradley wiggins';