user: ### NOW ANSWER:
Question: Name the sum of year for Olimpija Ljubljana with height less than 2.04
Columns: ['Player', 'Height', 'Position', 'Year born', 'Current Club']
Types: ['text', 'real', 'text', 'real', 'text']
Sample row: ['Bartłomiej Wołoszyn', 1.97, 'Forward', 1986.0, 'Anwil Wloclawek']
SQL:

assistant: SELECT SUM("Year born") FROM "Table" WHERE "Current Club" = 'Olimpija Ljubljana' AND "Height" < 2.04;