CREATE TABLE table_204_54 (id DECIMAL, "pondicherry assembly" TEXT, "duration" TEXT, "name of m.l.a." TEXT, "party affiliation" TEXT, "election year" DECIMAL)

the last winner of the twelfth pondicherry assembly ?
SELECT "name of m.l.a." FROM table_204_54 WHERE "pondicherry assembly" = 'twelfth'
SELECT "name of m.l.a." FROM "table_204_54" WHERE "pondicherry assembly" = 'twelfth'