What is the sum of Asian or Amerindian (%), when State is Sergipe, and when Brown (%) is greater than 61,3?
CREATE TABLE "ethnicities_by_region" (
  "state" text,
  "white_pct" real,
  "brown_pct" real,
  "black_pct" real,
  "asian_or_amerindian_pct" real
);
SELECT SUM("asian_or_amerindian_pct") FROM "ethnicities_by_region" WHERE "state"='sergipe' AND "brown_pct">'61,3';