Leeds City Council is the local authority for what type of location?
CREATE TABLE "group_membership" (
  "city" text,
  "county" text,
  "region" text,
  "local_authority" text,
  "type" text,
  "population" real,
  "urban_area" real,
  "metropolitan_area" real
);
SELECT "type" FROM "group_membership" WHERE "local_authority"='Leeds City Council';