CREATE TABLE table_204_880 (id NUMBER, "year" NUMBER, "competition" CLOB, "venue" CLOB, "position" CLOB, "event" CLOB, "notes" CLOB)

what was the only year the venue was in japan ?
SELECT "year" FROM table_204_880 WHERE "venue" = 'japan'
SELECT "year" FROM "table_204_880" WHERE "venue" = 'japan'