What is the smallest number of seats with INC as an election winner and BJP incumbent?
CREATE TABLE "chhattisgarh_result" (
  "state" text,
  "seats_a_cs" real,
  "date_of_counting" text,
  "incumbent" text,
  "election_winner" text
);
SELECT MIN("seats_a_cs") FROM "chhattisgarh_result" WHERE "election_winner"='inc' AND "incumbent"='bjp';