Simplify the following text for a Grade 5 native English-speaking person.
Original: Knut made his big screen debut in the German film Knut und seine Freunde ( Knut and His Friends ) , which premiered in Berlin on 2 March 2008 .
Simplified: The German film Knut und seine Freunde ( Knut and His Friends ) , was shown in Berlin on 2 March 2008 .