CREATE TABLE table_63903 ("Year" FLOAT, "Main" TEXT, "Hessen" TEXT, "Rhein" TEXT, "Saar" TEXT)

Who was the Hessen the year that Saar was FK Pirmasens?
SELECT "Hessen" FROM table_63903 WHERE "Saar" = 'fk pirmasens'
SELECT "Hessen" FROM "table_63903" WHERE "Saar" = 'fk pirmasens'