Karl Friedrich, Grand Duke of Saxe-Weimar-Eisenach

Target entity: Karl Friedrich, Grand Duke of Saxe-Weimar-Eisenach
Context triple: [Karl Alexander, Grand Duke of Saxe-Weimar-Eisenach, predecessor, Karl Friedrich, Grand Duke of Saxe-Weimar-Eisenach]

• A. Wilhelm Ernst, Grand Duke of Saxe-Weimar-Eisenach
  Wilhelm Ernst, Grand Duke of Saxe-Weimar-Eisenach, was a German sovereign who ruled the small Thuringian grand duchy in the late 19th and early 20th centuries, overseeing it through the final years of the German Empire and World War I.
• B. Charles Augustus, Grand Duke of Saxe-Weimar-Eisenach
  Charles Augustus, Grand Duke of Saxe-Weimar-Eisenach, was an 18th–19th century German ruler best known as a major patron of Weimar Classicism and supporter of figures like Goethe and Schiller.
• C. Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach
  Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach, was a 19th-century German sovereign known for his long and relatively liberal reign over the small Grand Duchy of Saxe-Weimar-Eisenach within the German Confederation.
• D. Karl August, Hereditary Grand Duke of Saxe-Weimar-Eisenach
  Karl August, Hereditary Grand Duke of Saxe-Weimar-Eisenach, was a 19th-century German nobleman and heir apparent to the Grand Duchy of Saxe-Weimar-Eisenach, noted for his dynastic ties to several European royal families.
• E. Duke of Saxe-Weimar-Eisenach
  The Duke of Saxe-Weimar-Eisenach was the hereditary ruler of the Grand Duchy of Saxe-Weimar-Eisenach, a small but culturally influential German state centered on the city of Weimar.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Karl Friedrich, Grand Duke of Saxe-Weimar-Eisenach
Target entity description: Karl Friedrich, Grand Duke of Saxe-Weimar-Eisenach, was a 19th-century German sovereign who ruled the small Thuringian grand duchy during a period of political change in the German states.

• A. Wilhelm Ernst, Grand Duke of Saxe-Weimar-Eisenach
  Wilhelm Ernst, Grand Duke of Saxe-Weimar-Eisenach, was a German sovereign who ruled the small Thuringian grand duchy in the late 19th and early 20th centuries, overseeing it through the final years of the German Empire and World War I.
• B. Charles Augustus, Grand Duke of Saxe-Weimar-Eisenach
  Charles Augustus, Grand Duke of Saxe-Weimar-Eisenach, was an 18th–19th century German ruler best known as a major patron of Weimar Classicism and supporter of figures like Goethe and Schiller.
• C. Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach
  Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach, was a 19th-century German sovereign known for his long and relatively liberal reign over the small Grand Duchy of Saxe-Weimar-Eisenach within the German Confederation.
• D. Karl August, Hereditary Grand Duke of Saxe-Weimar-Eisenach
  Karl August, Hereditary Grand Duke of Saxe-Weimar-Eisenach, was a 19th-century German nobleman and heir apparent to the Grand Duchy of Saxe-Weimar-Eisenach, noted for his dynastic ties to several European royal families.
• E. Duke of Saxe-Weimar-Eisenach
  The Duke of Saxe-Weimar-Eisenach was the hereditary ruler of the Grand Duchy of Saxe-Weimar-Eisenach, a small but culturally influential German state centered on the city of Weimar.
• F. None of above. chosen