What is the Lok Sabha for Dravida Munnetra Kazhagam, in 1999-04?
CREATE TABLE "members_of_the_parliament" (
  "lok_sabha" text,
  "duration" text,
  "name_of_m_p" text,
  "party_affiliation" text,
  "election_year" real
);
SELECT "lok_sabha" FROM "members_of_the_parliament" WHERE "party_affiliation"='dravida munnetra kazhagam' AND "duration"='1999-04';