What year were the Hoak Packers, Fresno, CA the 4th Place Team?
CREATE TABLE "international_softball_league_1951_to_19" (
  "year" real,
  "1st_place_team" text,
  "2nd_place_team" text,
  "3rd_place_team" text,
  "4th_place_team" text,
  "host_location" text
);
SELECT MIN("year") FROM "international_softball_league_1951_to_19" WHERE "4th_place_team"='hoak packers, fresno, ca';