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 Callixtus III | Statement: [Rolando Bandinelli, conflict, Antipope Callixtus III]

Target entity: Antipope Callixtus III
Context triple: [Rolando Bandinelli, conflict, Antipope Callixtus III]

• A. Antipope Felix II
  Antipope Felix II was a 4th-century cleric installed in opposition to Pope Liberius during the Arian controversy, later regarded by the Catholic Church as an illegitimate pope.
• B. Antipope Clement III
  Antipope Clement III, originally Guibert of Ravenna, was a rival claimant to the papacy during the Investiture Controversy, backed by Holy Roman Emperor Henry IV against the legitimate popes of his time.
• C. Antipope Paschal III
  Antipope Paschal III was a 12th-century claimant to the papacy, supported by the Holy Roman Emperor Frederick Barbarossa in opposition to the legitimate Pope Alexander III.
• D. 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.
• E. Benedict XIII (antipope)
  Benedict XIII was a prominent antipope of the Western Schism, opposing the Roman papacy from Avignon in the late 14th and early 15th centuries.
• 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 Callixtus III
Triple: [Rolando Bandinelli, conflict, Antipope Callixtus III]

Antipope Callixtus III was a 12th-century claimant to the papacy who opposed the legitimate pope during a schism in the Catholic Church.

Target entity: Antipope Callixtus III
Target entity description: Antipope Callixtus III was a 12th-century claimant to the papacy who opposed the legitimate pope during a schism in the Catholic Church.

• A. Antipope Felix II
  Antipope Felix II was a 4th-century cleric installed in opposition to Pope Liberius during the Arian controversy, later regarded by the Catholic Church as an illegitimate pope.
• B. Antipope Clement III
  Antipope Clement III, originally Guibert of Ravenna, was a rival claimant to the papacy during the Investiture Controversy, backed by Holy Roman Emperor Henry IV against the legitimate popes of his time.
• C. Antipope Paschal III
  Antipope Paschal III was a 12th-century claimant to the papacy, supported by the Holy Roman Emperor Frederick Barbarossa in opposition to the legitimate Pope Alexander III.
• D. 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.
• E. Benedict XIII (antipope)
  Benedict XIII was a prominent antipope of the Western Schism, opposing the Roman papacy from Avignon in the late 14th and early 15th centuries.
• F. None of above. chosen