Complex sentence: Karl Ludwig Sand (d.1820), a German university student and member of a liberal Burschenschaft, or student association, was executed in May, 1820, for his murder of the conservative dramatist August von Kotzebue the previous year in Mannheim.
Split into simpler sentences: Karl Ludwig Sand (Wunsiedel, then in Prussia, October 5,1795-Mannheim, May 20,1820) was a German university student and member of a liberal Burschenschaft (student association). He was executed in 1820 for the murder of the conservative dramatist August von Kotzebue the previous year in Mannheim.