CREATE TABLE table_204_576 (id NUMBER, "year" NUMBER, "best" CLOB, "location" CLOB, "date" CLOB, "world rank" CLOB)

did bekele have a better world ranking in 2012 or 2007 ?
SELECT "year" FROM table_204_576 WHERE "year" IN (2012, 2007) ORDER BY "world rank" LIMIT 1
SELECT "year" FROM "table_204_576" WHERE "year" IN (2012, 2007) ORDER BY "world rank" FETCH FIRST 1 ROWS ONLY