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: antipope Felix V | Statement: [Amadeus VIII, Duke of Savoy, positionHeld, antipope Felix V]

Target entity: antipope Felix V
Context triple: [Amadeus VIII, Duke of Savoy, positionHeld, antipope Felix V]

• A. Pope Marcellus II
  Pope Marcellus II was a mid-16th-century pontiff whose extremely brief papacy in 1555 is remembered for his reputation for reform and personal integrity during the era of the Counter-Reformation.
• B. Pope Benedict XIII
  Pope Benedict XIII was a 15th-century antipope, born Pedro de Luna, who led the Avignon papacy during the Western Schism and was later declared illegitimate by the Roman Catholic Church.
• C. Pope Pius III
  Pope Pius III was a briefly reigning Renaissance pope of the Catholic Church in 1503, known for his short pontificate and prior service as a respected cardinal and papal diplomat.
• D. Wibert of Ravenna (Antipope Clement III)
  Wibert of Ravenna, known as Antipope Clement III, was a rival pope set up by Holy Roman Emperor Henry IV during the Investiture Controversy, serving as the imperial-backed opponent to Pope Gregory VII and his successors.
• E. Pope Celestine IV
  Pope Celestine IV was a 13th-century pontiff whose extremely brief papacy in 1241 occurred during a period of intense conflict between the papacy and the Holy Roman Empire.
• 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: antipope Felix V
Triple: [Amadeus VIII, Duke of Savoy, positionHeld, antipope Felix V]

Antipope Felix V was the last historical antipope, a 15th-century Duke of Savoy who was elected by the Council of Basel in opposition to Pope Eugene IV.

Target entity: antipope Felix V
Target entity description: Antipope Felix V was the last historical antipope, a 15th-century Duke of Savoy who was elected by the Council of Basel in opposition to Pope Eugene IV.

• A. Pope Marcellus II
  Pope Marcellus II was a mid-16th-century pontiff whose extremely brief papacy in 1555 is remembered for his reputation for reform and personal integrity during the era of the Counter-Reformation.
• B. Pope Benedict XIII
  Pope Benedict XIII was a 15th-century antipope, born Pedro de Luna, who led the Avignon papacy during the Western Schism and was later declared illegitimate by the Roman Catholic Church.
• C. Pope Pius III
  Pope Pius III was a briefly reigning Renaissance pope of the Catholic Church in 1503, known for his short pontificate and prior service as a respected cardinal and papal diplomat.
• D. Wibert of Ravenna (Antipope Clement III)
  Wibert of Ravenna, known as Antipope Clement III, was a rival pope set up by Holy Roman Emperor Henry IV during the Investiture Controversy, serving as the imperial-backed opponent to Pope Gregory VII and his successors.
• E. Pope Celestine IV
  Pope Celestine IV was a 13th-century pontiff whose extremely brief papacy in 1241 occurred during a period of intense conflict between the papacy and the Holy Roman Empire.
• F. None of above. chosen