user: Question: Who won when Robert Kudelski finished with under 13 weeks?
Columns: ['Season', '# of Stars', '# of Weeks', 'Season Premiere Date', 'Season Finale Date', 'Winner', 'Runner-up', 'Third place']
Types: ['text', 'real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1 – Spring 2007', 13.0, 13.0, 'March 16, 2007', 'June 2, 2007', 'Agnieszka Włodarczyk', 'Natasza Urbańska', 'Robert Moskwa']
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "# of Weeks" < 13.0 AND "Third place" = 'Robert Kudelski';