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: Abu al-Abbas Abd Allah al-Ma'mun ibn Harun al-Rashid | Statement: [al-Ma'mun, fullName, Abu al-Abbas Abd Allah al-Ma'mun ibn Harun al-Rashid]

Target entity: Abu al-Abbas Abd Allah al-Ma'mun ibn Harun al-Rashid
Context triple: [al-Ma'mun, fullName, Abu al-Abbas Abd Allah al-Ma'mun ibn Harun al-Rashid]

• A. al-Ma'mun chosen
  Al-Ma'mun was a prominent Abbasid caliph known for his patronage of science and philosophy, the founding of the Bayt al-Hikma (House of Wisdom) in Baghdad, and his role in the Mihna (inquisition) over Islamic doctrine.
• B. Harun al-Rashid
  Harun al-Rashid was a prominent 8th–9th century Abbasid caliph whose reign is famed for its cultural flourishing, political power, and legendary portrayal in the tales of the One Thousand and One Nights.
• C. Junayd of Baghdad
  Junayd of Baghdad was a pivotal 9th-century Sufi master known for articulating a sober, disciplined form of Islamic mysticism that deeply shaped later Sufi thought and practice.
• D. ʿAbd Allāh al-Mahdī Billāh
  ʿAbd Allāh al-Mahdī Billāh was the first Fatimid caliph and Isma'ili imam who established a Shi'a caliphate in North Africa in the early 10th century.
• E. Abu Yusuf
  Abu Yusuf was an influential 8th-century Islamic jurist and chief judge of the Abbasid Caliphate, renowned as a leading disciple of Abu Hanifa and a key architect of early Hanafi jurisprudence.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.