Which city has a school of North Vernon and a county of 40 Jennings?
CREATE TABLE "former_members" (
  "school" text,
  "city" text,
  "team_name" text,
  "county" text,
  "year_joined" text,
  "year_left" text
);
SELECT "city" FROM "former_members" WHERE "county"='40 jennings' AND "school"='north vernon';