When the episode called "the parent trap" airs, what is the weekly rank
CREATE TABLE "u_s" (
  "num" real,
  "episode" text,
  "air_date" text,
  "timeslot_est" text,
  "rating" text,
  "share" real,
  "18_49_rating_share" text,
  "viewers_m" text,
  "weekly_rank_num" text
);
SELECT COUNT("weekly_rank_num") FROM "u_s" WHERE "episode"='\"The Parent Trap\"';