What German film director directed a 1920 silent film considered to be lost? 
Evening – Night – Morning: Evening – Night – Morning (German: Abend – Nacht – Morgen ) is a 1920 silent German drama film directed by F. W. Murnau. F. W. Murnau: Friedrich Wilhelm "F. W." Murnau (born Friedrich Wilhelm Plumpe; December 28, 1888March 11, 1931) was a German film director.
i don't know