Original sentence: (The Berlin circle should not  be confused with a literary group with a similar name that was formed in Petrograd in 1921 ).The Serapion Brethren [Die Serapionsbrüder] is the name of a literary and social circle, formed in Berlin in 1818 by the German romantic writer E
Edited sentence: The Serapion Brethren (Die Serapionsbrüder) is the name of a literary and social circle, formed in Berlin in 1818 by the German romantic writer E