How many shows were launched on CBS (2002)?
CREATE TABLE "dramas" (
  "no" real,
  "name" text,
  "country" text,
  "original_channel" text,
  "no_of_episodes" real,
  "running_time" text,
  "launched" text,
  "date" text,
  "irst" text
);
SELECT COUNT("launched") FROM "dramas" WHERE "original_channel"='CBS (2002)';