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: anti-caliphate of Abd Allah ibn al-Zubayr | Statement: [Siege of Mecca (683), involves, anti-caliphate of Abd Allah ibn al-Zubayr]

Target entity: anti-caliphate of Abd Allah ibn al-Zubayr
Context triple: [Siege of Mecca (683), involves, anti-caliphate of Abd Allah ibn al-Zubayr]

• A. Umayyad–Abbasid conflict
  The Umayyad–Abbasid conflict was a protracted 8th-century power struggle in the early Islamic world that culminated in the Abbasid overthrow of the Umayyad Caliphate and the establishment of a new ruling dynasty.
• B. Ridda Wars
  The Ridda Wars were a series of military campaigns launched by the early Rashidun Caliphate to suppress apostasy and rebellion in Arabia following the death of the Prophet Muhammad.
• C. Ikhwan rebellion
  The Ikhwan rebellion was a late-1920s uprising by Wahhabi tribal fighters against Ibn Saud’s emerging Saudi state, sparked by opposition to his centralization policies and diplomatic restraints on expansion.
• D. Abbasid Revolution
  The Abbasid Revolution was the mid-8th-century uprising that overthrew the Umayyad Caliphate and established the Abbasid dynasty as the new Islamic ruling power.
• E. First Fitna
  The First Fitna was the first major civil war in early Islamic history, marked by political and religious conflicts over the rightful caliph following the assassination of Uthman and during the caliphate of Ali.
• 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: anti-caliphate of Abd Allah ibn al-Zubayr
Triple: [Siege of Mecca (683), involves, anti-caliphate of Abd Allah ibn al-Zubayr]

The anti-caliphate of Abd Allah ibn al-Zubayr was a rival Islamic polity centered in Mecca that challenged Umayyad authority during the Second Fitna in the late 7th century.

Target entity: anti-caliphate of Abd Allah ibn al-Zubayr
Target entity description: The anti-caliphate of Abd Allah ibn al-Zubayr was a rival Islamic polity centered in Mecca that challenged Umayyad authority during the Second Fitna in the late 7th century.

• A. Umayyad–Abbasid conflict
  The Umayyad–Abbasid conflict was a protracted 8th-century power struggle in the early Islamic world that culminated in the Abbasid overthrow of the Umayyad Caliphate and the establishment of a new ruling dynasty.
• B. Ridda Wars
  The Ridda Wars were a series of military campaigns launched by the early Rashidun Caliphate to suppress apostasy and rebellion in Arabia following the death of the Prophet Muhammad.
• C. Ikhwan rebellion
  The Ikhwan rebellion was a late-1920s uprising by Wahhabi tribal fighters against Ibn Saud’s emerging Saudi state, sparked by opposition to his centralization policies and diplomatic restraints on expansion.
• D. Abbasid Revolution
  The Abbasid Revolution was the mid-8th-century uprising that overthrew the Umayyad Caliphate and established the Abbasid dynasty as the new Islamic ruling power.
• E. First Fitna
  The First Fitna was the first major civil war in early Islamic history, marked by political and religious conflicts over the rightful caliph following the assassination of Uthman and during the caliphate of Ali.
• F. None of above. chosen