Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: Frederick, Duke of Mecklenburg-Grabow | Statement: [Sophia Louise of Mecklenburg-Schwerin, father, Frederick, Duke of Mecklenburg-Grabow]

Target entity: Frederick, Duke of Mecklenburg-Grabow
Context triple: [Sophia Louise of Mecklenburg-Schwerin, father, Frederick, Duke of Mecklenburg-Grabow]

• A. Frederick William, Duke of Schleswig-Holstein-Sonderburg-Glücksburg
  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.
• B. Frederick II, Duke of Saxe-Gotha-Altenburg
  Frederick II, Duke of Saxe-Gotha-Altenburg was an 18th-century German prince of the Ernestine Wettin line, noted as the ruler of the small Thuringian duchy of Saxe-Gotha-Altenburg and the father of Princess Augusta, who became Princess of Wales.
• C. 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.
• D. Frederick, Duke of Saxe-Altenburg
  Frederick, Duke of Saxe-Altenburg was a 19th-century German nobleman who ruled the small Thuringian duchy of Saxe-Altenburg and belonged to the Ernestine branch of the Wettin dynasty.
• E. Frederick III, Prince of Salm-Kyrburg
  Frederick III, Prince of Salm-Kyrburg was an 18th-century German nobleman and military officer who became a prominent figure at the French court and was executed during the French Revolution.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: Frederick, Duke of Mecklenburg-Grabow
Triple: [Sophia Louise of Mecklenburg-Schwerin, father, Frederick, Duke of Mecklenburg-Grabow]

Frederick, Duke of Mecklenburg-Grabow was a 17th–18th century German nobleman of the House of Mecklenburg who held the ducal title in the Mecklenburg-Grabow line and was the father of Sophia Louise of Mecklenburg-Schwerin, a Queen consort of Prussia.

Target entity: Frederick, Duke of Mecklenburg-Grabow
Target entity description: Frederick, Duke of Mecklenburg-Grabow was a 17th–18th century German nobleman of the House of Mecklenburg who held the ducal title in the Mecklenburg-Grabow line and was the father of Sophia Louise of Mecklenburg-Schwerin, a Queen consort of Prussia.

• A. Frederick William, Duke of Schleswig-Holstein-Sonderburg-Glücksburg
  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.
• B. Frederick II, Duke of Saxe-Gotha-Altenburg
  Frederick II, Duke of Saxe-Gotha-Altenburg was an 18th-century German prince of the Ernestine Wettin line, noted as the ruler of the small Thuringian duchy of Saxe-Gotha-Altenburg and the father of Princess Augusta, who became Princess of Wales.
• C. 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.
• D. Frederick, Duke of Saxe-Altenburg
  Frederick, Duke of Saxe-Altenburg was a 19th-century German nobleman who ruled the small Thuringian duchy of Saxe-Altenburg and belonged to the Ernestine branch of the Wettin dynasty.
• E. Frederick III, Prince of Salm-Kyrburg
  Frederick III, Prince of Salm-Kyrburg was an 18th-century German nobleman and military officer who became a prominent figure at the French court and was executed during the French Revolution.
• F. None of above. chosen