Frederick William, Duke of Schleswig-Holstein-Sonderburg-Glücksburg

Target entity: Frederick William, Duke of Schleswig-Holstein-Sonderburg-Glücksburg
Context triple: [Thyra of Denmark, grandfather, Frederick William, Duke of Schleswig-Holstein-Sonderburg-Glücksburg]

• A. Frederick Charles Ferdinand, Duke of Brunswick-Bevern
  Frederick Charles Ferdinand, Duke of Brunswick-Bevern, was an 18th-century German prince and Prussian field marshal from a cadet branch of the House of Brunswick who distinguished himself in the Seven Years' War.
• B. Frederick William, Duke of Brunswick-Wolfenbüttel
  Frederick William, Duke of Brunswick-Wolfenbüttel was a German nobleman and military leader who ruled the Duchy of Brunswick in the early 19th century and became known for his opposition to Napoleonic domination.
• C. Frederick IV, Duke of Holstein-Gottorp
  Frederick IV, Duke of Holstein-Gottorp, was a late 17th- to early 18th-century German prince of the House of Holstein-Gottorp who ruled a duchy in the Holy Roman Empire and was closely connected by marriage to the Swedish royal family.
• D. Charles Frederick, Duke of Holstein-Gottorp
  Charles Frederick, Duke of Holstein-Gottorp, was an 18th-century German prince whose marriage into the Russian imperial family positioned his descendants, including his son Peter III, in the line of succession to the Russian throne.
• E. Charles Leopold, Duke of Mecklenburg-Schwerin
  Charles Leopold, Duke of Mecklenburg-Schwerin, was an 18th-century German nobleman and ruler of the Mecklenburg-Schwerin duchy, notable as the father of Russian regent Anna Leopoldovna.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Frederick William, Duke of Schleswig-Holstein-Sonderburg-Glücksburg
Target entity description: Frederick William, Duke of Schleswig-Holstein-Sonderburg-Glücksburg was a 19th-century German ducal prince of the Glücksburg line whose descendants became closely linked with several European royal families, including the Danish monarchy.

• A. Frederick Charles Ferdinand, Duke of Brunswick-Bevern
  Frederick Charles Ferdinand, Duke of Brunswick-Bevern, was an 18th-century German prince and Prussian field marshal from a cadet branch of the House of Brunswick who distinguished himself in the Seven Years' War.
• B. Frederick William, Duke of Brunswick-Wolfenbüttel
  Frederick William, Duke of Brunswick-Wolfenbüttel was a German nobleman and military leader who ruled the Duchy of Brunswick in the early 19th century and became known for his opposition to Napoleonic domination.
• C. Frederick IV, Duke of Holstein-Gottorp
  Frederick IV, Duke of Holstein-Gottorp, was a late 17th- to early 18th-century German prince of the House of Holstein-Gottorp who ruled a duchy in the Holy Roman Empire and was closely connected by marriage to the Swedish royal family.
• D. Charles Frederick, Duke of Holstein-Gottorp
  Charles Frederick, Duke of Holstein-Gottorp, was an 18th-century German prince whose marriage into the Russian imperial family positioned his descendants, including his son Peter III, in the line of succession to the Russian throne.
• E. Charles Leopold, Duke of Mecklenburg-Schwerin
  Charles Leopold, Duke of Mecklenburg-Schwerin, was an 18th-century German nobleman and ruler of the Mecklenburg-Schwerin duchy, notable as the father of Russian regent Anna Leopoldovna.
• F. None of above. chosen