CREATE TABLE table_204_759 (id NUMBER, "year" NUMBER, "competition" CLOB, "venue" CLOB, "position" CLOB, "notes" CLOB)

what competition was the only one where this competitor achieved 1st place ?
SELECT "competition" FROM table_204_759 WHERE "position" = 1
SELECT "competition" FROM "table_204_759" WHERE "position" = 1