CREATE TABLE table_204_312 (id NUMBER, "stage" CLOB, "date" CLOB, "route" CLOB, "terrain" CLOB, "length" CLOB, "winner" CLOB)

name the only stage that sean kelly won .
SELECT "stage" FROM table_204_312 WHERE "winner" = 'sean kelly'
SELECT "stage" FROM "table_204_312" WHERE "winner" = 'sean kelly'