What is the smallest year for a Main of Eintracht Frankfurt, Rhein of Waldhof Mannheim, Sarr of FK Pirmasens, and Hessen of Wormatia Worms?
CREATE TABLE "1928_to_1933" (
  "year" real,
  "main" text,
  "hessen" text,
  "rhein" text,
  "saar" text
);
SELECT MIN("year") FROM "1928_to_1933" WHERE "main"='eintracht frankfurt' AND "rhein"='waldhof mannheim' AND "saar"='fk pirmasens' AND "hessen"='wormatia worms';