When bbc two is the original channel what is the date of original removal?
CREATE TABLE "returning_this_year_after_a_break_of_one" (
  "programme" text,
  "date_s_of_original_removal" text,
  "original_channel" text,
  "date_of_return" text,
  "new_channel_s" text
);
SELECT "date_s_of_original_removal" FROM "returning_this_year_after_a_break_of_one" WHERE "original_channel"='BBC Two';