Which segment A item that has a Segment D of wigs?
CREATE TABLE "season_6_2005_2006" (
  "series_ep" text,
  "episode" real,
  "netflix" text,
  "segment_a" text,
  "segment_b" text,
  "segment_c" text,
  "segment_d" text
);
SELECT "segment_a" FROM "season_6_2005_2006" WHERE "segment_d"='wigs';