CREATE TABLE table_204_474 (id DECIMAL, "year" DECIMAL, "host" TEXT, "champion" TEXT, "second place" TEXT, "third place" TEXT, "fourth place" TEXT)

previous third place finisher before jt marvelous
SELECT "third place" FROM table_204_474 WHERE "year" < (SELECT "year" FROM table_204_474 WHERE "third place" = 'jt marvelous') ORDER BY "year" DESC LIMIT 1
SELECT "third place" FROM "table_204_474" WHERE "year" < (SELECT "year" FROM "table_204_474" WHERE "third place" = 'jt marvelous') ORDER BY "year" DESC NULLS LAST LIMIT 1