Triple

Target entity: Abbasid Caliphate
Context triple: [Muhammad al-Mahdi, birthPlace, Abbasid Caliphate]

• A. Abbasid Caliphate chosen
  The Abbasid Caliphate was a major Islamic dynasty that ruled from the mid-8th to the 13th century, overseeing a golden age of science, culture, and philosophy centered in its capital, Baghdad.
• B. Umayyad Caliphate
  The Umayyad Caliphate was an early Islamic empire (661–750 CE) that rapidly expanded from the Iberian Peninsula to Central Asia, establishing Arabic as an administrative language and shaping the political and cultural foundations of the Arab-Islamic world.
• C. Rashidun Caliphate
  The Rashidun Caliphate was the first Islamic caliphate established after the death of the Prophet Muhammad, rapidly expanding Arab Muslim rule across the Middle East, North Africa, and parts of Asia under the leadership of the “Rightly Guided” caliphs.
• D. Tahirid dynasty
  The Tahirid dynasty was a Persian Muslim ruling family that governed Khorasan and parts of eastern Iran in the 9th century as semi-autonomous governors under the Abbasid Caliphate.
• E. Islamic Caliphates
  The Islamic Caliphates were successive Muslim empires that, at their height, ruled vast territories across the Middle East, North Africa, and beyond, serving as both political and religious centers of the Islamic world.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.