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: William IX, Duke of Aquitaine | Statement: [Count of Poitiers, hasTitleHolder, William IX, Duke of Aquitaine]

Target entity: William IX, Duke of Aquitaine
Context triple: [Count of Poitiers, hasTitleHolder, William IX, Duke of Aquitaine]

• A. William IX, Count of Poitiers
  William IX, Count of Poitiers was the eldest son and heir of Eleanor of Aquitaine and King Louis VII of France, whose early death in childhood altered the succession of the Angevin and Aquitanian realms.
• B. William I, Duke of Aquitaine
  William I, Duke of Aquitaine was a powerful 10th-century French nobleman and military leader renowned for his pivotal role in monastic reform and support of the Church.
• C. William X, Duke of Aquitaine
  William X, Duke of Aquitaine was a 12th-century French nobleman and crusader, notable as the last independent Duke of Aquitaine and father of Eleanor of Aquitaine.
• D. William of Aumale
  William of Aumale was a 12th-century Anglo-Norman nobleman and military leader who held the title of Earl of York and played a significant role in the politics of King Stephen’s reign.
• E. Geoffrey II, Duke of Brittany
  Geoffrey II, Duke of Brittany was a 12th-century French nobleman, son of Henry II of England and brother of Richard the Lionheart, who ruled Brittany through his marriage to Constance and died young in a tournament accident.
• 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: William IX, Duke of Aquitaine
Triple: [Count of Poitiers, hasTitleHolder, William IX, Duke of Aquitaine]

William IX, Duke of Aquitaine was an 11th–12th century French nobleman famed both as a powerful feudal ruler and as one of the earliest known troubadour poets in the Occitan language.

Target entity: William IX, Duke of Aquitaine
Target entity description: William IX, Duke of Aquitaine was an 11th–12th century French nobleman famed both as a powerful feudal ruler and as one of the earliest known troubadour poets in the Occitan language.

• A. William IX, Count of Poitiers
  William IX, Count of Poitiers was the eldest son and heir of Eleanor of Aquitaine and King Louis VII of France, whose early death in childhood altered the succession of the Angevin and Aquitanian realms.
• B. William I, Duke of Aquitaine
  William I, Duke of Aquitaine was a powerful 10th-century French nobleman and military leader renowned for his pivotal role in monastic reform and support of the Church.
• C. William X, Duke of Aquitaine
  William X, Duke of Aquitaine was a 12th-century French nobleman and crusader, notable as the last independent Duke of Aquitaine and father of Eleanor of Aquitaine.
• D. William of Aumale
  William of Aumale was a 12th-century Anglo-Norman nobleman and military leader who held the title of Earl of York and played a significant role in the politics of King Stephen’s reign.
• E. Geoffrey II, Duke of Brittany
  Geoffrey II, Duke of Brittany was a 12th-century French nobleman, son of Henry II of England and brother of Richard the Lionheart, who ruled Brittany through his marriage to Constance and died young in a tournament accident.
• F. None of above. chosen