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: Alan IV, Duke of Brittany | Statement: [Constance of Normandy, spouse, Alan IV, Duke of Brittany]

Target entity: Alan IV, Duke of Brittany
Context triple: [Constance of Normandy, spouse, Alan IV, Duke of Brittany]

• A. John III, Duke of Brittany
  John III, Duke of Brittany was a 14th-century Breton ruler whose childless reign and succession disputes helped trigger the Breton War of Succession.
• B. John VI, Duke of Brittany
  John VI, Duke of Brittany was a late 14th- and early 15th-century Breton ruler known for consolidating ducal authority and navigating the complex politics between France and England during the Hundred Years’ War.
• C. John II, Duke of Brittany
  John II, Duke of Brittany was a 13th-century French nobleman who ruled the Duchy of Brittany and played a significant role in the politics of the Capetian kingdom.
• D. John I, Duke of Brittany
  John I, Duke of Brittany was a 13th-century Breton nobleman who ruled the Duchy of Brittany and played a significant role in the politics of medieval France.
• E. Arthur II, Duke of Brittany
  Arthur II, Duke of Brittany was a late 13th- and early 14th-century Breton ruler from the House of Dreux who governed the Duchy of Brittany under French suzerainty and navigated complex feudal and dynastic politics of medieval France.
• 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: Alan IV, Duke of Brittany
Triple: [Constance of Normandy, spouse, Alan IV, Duke of Brittany]

Alan IV, Duke of Brittany was an 11th–12th century Breton ruler known for his participation in the First Crusade and his role in consolidating ducal authority in Brittany.

Target entity: Alan IV, Duke of Brittany
Target entity description: Alan IV, Duke of Brittany was an 11th–12th century Breton ruler known for his participation in the First Crusade and his role in consolidating ducal authority in Brittany.

• A. John III, Duke of Brittany
  John III, Duke of Brittany was a 14th-century Breton ruler whose childless reign and succession disputes helped trigger the Breton War of Succession.
• B. John VI, Duke of Brittany
  John VI, Duke of Brittany was a late 14th- and early 15th-century Breton ruler known for consolidating ducal authority and navigating the complex politics between France and England during the Hundred Years’ War.
• C. John II, Duke of Brittany
  John II, Duke of Brittany was a 13th-century French nobleman who ruled the Duchy of Brittany and played a significant role in the politics of the Capetian kingdom.
• D. John I, Duke of Brittany
  John I, Duke of Brittany was a 13th-century Breton nobleman who ruled the Duchy of Brittany and played a significant role in the politics of medieval France.
• E. Arthur II, Duke of Brittany
  Arthur II, Duke of Brittany was a late 13th- and early 14th-century Breton ruler from the House of Dreux who governed the Duchy of Brittany under French suzerainty and navigated complex feudal and dynastic politics of medieval France.
• F. None of above. chosen