Complex sentence: Since February 2003, Senta Berger has been president of the German Film Academy, who want to advance the new generation of actors and actresses in Germany and Europe and who will decide the assignment of the German Film Awards in the future.
Split into simpler sentences: Since February 2003, Senta Berger has been president of the German Film Academy, which seeks to advance the new generation of actors and actresses in Germany and Europe. The Academy will decide the assignment of the German Film Awards in the future.