In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).
Q: Context: JURIST is an online legal news service hosted by the University of Pittsburgh School of Law, powered by a staff of more than 60 law students working in Pittsburgh and other US locations under the direction of founding Publisher & Editor-in-Chief Professor Bernard Hibbitts, Acting Executive Director Andrew Morgan, Research Director Jaclyn Belczyk, Technical Director Jeremiah Lee, Managing Editor Joseph Macklin and Chief of Staff Steven Wildberger. It features continuously updated US and international legal news and expert commentary. JURIST is dedicated to advancing civic education, supporting sound decision-making and promoting the rule of law by objectively reporting, documenting and analyzing important legal developments as they happen. JURIST seeks to encourage teaching, learning, and scholarship within the legal community and in the general community., Muhammad (c. 570 CE  8 June 632 CE) is the central figure of Islam and widely regarded as its founder by non-Muslims. He is known as the "Holy Prophet" to Muslims, almost all of whom consider him to be the last prophet sent by God to mankind to restore Islam, believed by Muslims to be the unaltered original monotheistic faith of Adam, Abraham, Moses, Jesus, and other prophets. Muhammad united Arabia into a single Muslim polity and ensured that his teachings, practices, and the Quran, formed the basis of Islamic religious belief., The Rashidun Caliphate (') was the Islamic caliphate in the earliest period of Islam, comprising the first four caliphsthe "Rightly Guided" or Rashidun caliphs ('). It was founded after Muhammad's death in 632 (year 11 AH in the Islamic calendar). At its height, the Caliphate controlled an empire from the Arabian Peninsula and the Levant, to the Caucasus in the north, North Africa from Egypt to present-day Tunisia in the west, and the Iranian plateau to Central Asia in the east., Moses (' ' '; "Moushe"; '; "" in both the Septuagint and the New Testament) is a prophet in Abrahamic religions. According to the Hebrew Bible, he was a former Egyptian prince who later in life became a religious leader and lawgiver, to whom the authorship of the Torah, or acquisition of the Torah from Heaven is traditionally attributed. Also called "Moshe Rabbenu" in Hebrew ("lit." "Moses our Teacher"), he is the most important prophet in Judaism. He is also an important prophet in Christianity, Islam, Bahá'í Faith as well as a number of other faiths., afsa bint Umar ( Arabic :     ) ( c.605 - 665 ) was a wife of the Islamic prophet Muhammad and therefore a Mother of the Believers ., Abraha (also spelled Abreha) (died after AD 553; r. 525at least 553), also known as 'Abraha al-Ashram (Arabic:  ), was an Ethiopian general then the viceroy of southern Arabia for the Kingdom of Aksum, and later declared himself an independent King of Himyar. Abraha ruled much of present-day Yemen and Hijaz from at least 531 -547 AD to 555 - 565 AD., Umar, also spelled Omar (born c.583 CEdied 3 November 644 CE), was one of the most powerful and influential Muslim caliphs in history. He was a senior Sahabi of the Islamic prophet Muhammad. He succeeded Abu Bakr (632634) as the second caliph of the Rashidun Caliphate on 23 August 634. He was an expert Islamic jurist known for his pious and just nature, which earned him the epithet Al-Farooq ("the one who distinguishes (between right and wrong)"). He is sometimes referred to as Umar I by historians of Islam, since a later Umayyad caliph, Umar II, also bore that name. , Subject: hafsa bint umar, Relation: country_of_citizenship, Options: (A) editor (B) kingdom of aksum (C) rashidun caliphate (D) teacher (E) yemen
A:
rashidun caliphate