How many episodes were shown on Friday if 210 Kirby's Epic Yarn was shown on Wednesday?
CREATE TABLE "table1_18173916_6" (
  "episodes" text,
  "monday" text,
  "tuesday" text,
  "wednesday" text,
  "thursday" text,
  "friday" text
);
SELECT COUNT("friday") FROM "table1_18173916_6" WHERE "wednesday"='210 Kirby''s Epic Yarn';