Who danced the Cha-Cha-Cha on November 18, 2008?
CREATE TABLE "junior_ballroom_dancing_competition" (
  "date" text,
  "round" real,
  "pair" text,
  "ages" text,
  "dance" text,
  "song" text
);
SELECT "pair" FROM "junior_ballroom_dancing_competition" WHERE "dance"='cha-cha-cha' AND "date"='november 18, 2008';