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: Guy of Brittany, Count of Penthièvre | Statement: [John III, Duke of Brittany, sibling, Guy of Brittany, Count of Penthièvre]

Target entity: Guy of Brittany, Count of Penthièvre
Context triple: [John III, Duke of Brittany, sibling, Guy of Brittany, Count of Penthièvre]

• A. Peter of Brittany
  Peter of Brittany was a medieval French nobleman and member of the ducal family of Brittany, known primarily as a younger son of Duke John I.
• B. John III of Penthièvre
  John III of Penthièvre was a 15th-century French nobleman and claimant to the Duchy of Brittany from the House of Penthièvre, involved in the Breton succession disputes.
• C. Hoël II, Duke of Brittany
  Hoël II, Duke of Brittany was an 11th-century Breton nobleman who ruled as Duke of Brittany and Count of Nantes, playing a key role in consolidating ducal authority in the region.
• D. Prince Arthur, Duke of Brittany
  Prince Arthur, Duke of Brittany was the nephew of King John of England and a Plantagenet prince whose disputed claim to the English throne and mysterious early death made him a notable figure in medieval English history.
• 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: Guy of Brittany, Count of Penthièvre
Triple: [John III, Duke of Brittany, sibling, Guy of Brittany, Count of Penthièvre]

Guy of Brittany, Count of Penthièvre, was a 14th-century Breton nobleman from the ducal House of Brittany who held the important lordship of Penthièvre during the late Middle Ages.

Target entity: Guy of Brittany, Count of Penthièvre
Target entity description: Guy of Brittany, Count of Penthièvre, was a 14th-century Breton nobleman from the ducal House of Brittany who held the important lordship of Penthièvre during the late Middle Ages.

• A. Peter of Brittany
  Peter of Brittany was a medieval French nobleman and member of the ducal family of Brittany, known primarily as a younger son of Duke John I.
• B. John III of Penthièvre
  John III of Penthièvre was a 15th-century French nobleman and claimant to the Duchy of Brittany from the House of Penthièvre, involved in the Breton succession disputes.
• C. Hoël II, Duke of Brittany
  Hoël II, Duke of Brittany was an 11th-century Breton nobleman who ruled as Duke of Brittany and Count of Nantes, playing a key role in consolidating ducal authority in the region.
• D. Prince Arthur, Duke of Brittany
  Prince Arthur, Duke of Brittany was the nephew of King John of England and a Plantagenet prince whose disputed claim to the English throne and mysterious early death made him a notable figure in medieval English history.
• 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