What's the title when the genre is drama with a network of KBS2 happening in 2011?
CREATE TABLE "television_series" (
  "year" real,
  "title" text,
  "hangul_japanese" text,
  "role" text,
  "network" text,
  "genre" text
);
SELECT "title" FROM "television_series" WHERE "genre"='drama' AND "network"='kbs2' AND "year"=2011;