CREATE TABLE table_name_89 (winner VARCHAR2, _number_of_weeks VARCHAR2, third_place VARCHAR2)

Who won when robert kudelski finished with under 13 weeks?
SELECT winner FROM table_name_89 WHERE _number_of_weeks < 13 AND third_place = "robert kudelski"
SELECT "winner" FROM "table_name_89" WHERE "_number_of_weeks" < 13 AND "robert kudelski" = "third_place"