Simplify the following text for a Grade 7 native English-speaking person.
Original: Eisenstein 's first film , Glumov 's Diary ( for the theater production Wiseman ) , was also made in that same year with Dziga Vertov hired initially as an `` instructor . ''
Simplified: Eisenstein 's first film , Glumov 's Diary , was also made in that same year . Dziga Vertov hired at first as an `` instructor '' for the film The film formed part of his theater production Wiseman .