 Complete the following phrase:  In September 1911, at the Minsk Electric Theatre, a Jewish troupe led by A.M. Smolarsky accompanied a short projection of silent motion pictures with the Yiddish song A Brivele der Mamen Letter to Mother. This was one of the first documented instances of Yiddish cinema. At the very same time, short silent films with Yiddish intertitles were being directed for Jews in the 