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: Wibert of Ravenna (Antipope Clement III) | Statement: [Investiture Controversy, involvedPerson, Wibert of Ravenna (Antipope Clement III)]

Target entity: Wibert of Ravenna (Antipope Clement III)
Context triple: [Investiture Controversy, involvedPerson, Wibert of Ravenna (Antipope Clement III)]

• A. Pope Paschal II
  Pope Paschal II was a 12th-century pope whose reign was marked by intense conflict with secular rulers over the authority to appoint bishops, a central issue in the Investiture Controversy.
• B. Pope Leo IX
  Pope Leo IX was an 11th-century reformist pope whose conflicts with the Byzantine Church helped precipitate the East–West Schism between Roman Catholicism and Eastern Orthodoxy.
• C. Pope Gregory VII
  Pope Gregory VII was an 11th-century reformist pope known for asserting papal authority over secular rulers and excommunicating Emperor Henry IV during the Investiture Controversy.
• D. Pope Innocent IV
  Pope Innocent IV was a 13th-century head of the Catholic Church known for his conflicts with Holy Roman Emperor Frederick II and his influential role in church law and papal authority.
• E. pontificate of Clement V
  The pontificate of Clement V marks the beginning of the Avignon Papacy, during which the pope resided in France and closely aligned the papacy with French royal interests.
• 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: Wibert of Ravenna (Antipope Clement III)
Triple: [Investiture Controversy, involvedPerson, 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.

Target entity: Wibert of Ravenna (Antipope Clement III)
Target entity description: 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.

• A. Pope Paschal II
  Pope Paschal II was a 12th-century pope whose reign was marked by intense conflict with secular rulers over the authority to appoint bishops, a central issue in the Investiture Controversy.
• B. Pope Leo IX
  Pope Leo IX was an 11th-century reformist pope whose conflicts with the Byzantine Church helped precipitate the East–West Schism between Roman Catholicism and Eastern Orthodoxy.
• C. Pope Gregory VII
  Pope Gregory VII was an 11th-century reformist pope known for asserting papal authority over secular rulers and excommunicating Emperor Henry IV during the Investiture Controversy.
• D. Pope Innocent IV
  Pope Innocent IV was a 13th-century head of the Catholic Church known for his conflicts with Holy Roman Emperor Frederick II and his influential role in church law and papal authority.
• E. pontificate of Clement V
  The pontificate of Clement V marks the beginning of the Avignon Papacy, during which the pope resided in France and closely aligned the papacy with French royal interests.
• F. None of above. chosen