question: What nationality is Irene Palaiologina, Empress Of Bulgaria's father?
context: [["Maria-Irene Palaiologina", ["Irene Palaiologina( Irina; \u0395\u03b9\u03c1\u03ae\u03bd\u03b7 \u03a0\u03b1\u03bb\u03b1\u03b9\u03bf\u03bb\u03bf\u03b3\u03af\u03bd\u03b1)( 1327- after 1356) was a Byzantine princess and Bulgarian empress consort.", "She was also known as Maria Palaiologina( \u039c\u03b1\u03c1\u03af\u03b1 \u03a0\u03b1\u03bb\u03b1\u03b9\u03bf\u03bb\u03bf\u03b3\u03af\u03bd\u03b1).", "Her parents were Andronikos III Palaiologos and Anna of Savoy, whilst her siblings were John V Palaiologos and Michael Palaiologos.", "She married in 1336 Tsar Michael Asen IV of Bulgaria.", "Nothing else is known about her, except that she was an Orthodox Christian."]], ["Helena Megale Komnene", ["Helena Megale Komnene  (died 1366) is the name given for the first wife of King Bagrat V of Georgia.", "Her first name is recorded in \"The Georgian Chronicle\", and her family name is based on a theory which identifies her as a daughter of Basil of Trebizond.", "If true, the identity of her mother would be uncertain.", "Basil was bigamous, concurrently married to Irene Palaiologina and Irene of Trebizond.", "Helena died in 1366, victim to a plague which had spread across Georgia during the 1350s and 1360s (possibly a recurrence of the Black Death).", "A year after her death, her husband married Anna of Trebizond.", "According to the \"Georgian Chronicle\", Helena was survived by two children:"]], ["Irene Palaiologina (Byzantine empress)", ["Irene Palaiologina( died after 1356), was the Empress consort of Matthew Kantakouzenos."]], ["Irene Palaiologina, Empress of Bulgaria", ["Irene Palaiologina  was the eldest daughter of Byzantine emperor Michael VIII Palaiologos and empress Theodora Palaiologina, and empress consort of Ivan Asen III of Bulgaria."]], ["Michael VIII Palaiologos", ["Michael VIII Palaiologos or Palaeologus (1223 \u2013 11 December 1282) reigned as the co-emperor of the Empire of Nicaea from 1259 to 1261, and as Byzantine Emperor from 1261 until his death.", "Michael VIII was the founder of the Palaiologan dynasty that would rule the Byzantine Empire until the Fall of Constantinople in 1453.", "He recovered Constantinople from the Latin Empire in 1261 and transformed the Empire of Nicaea into a restored Byzantine Empire.", "His reign would see considerable recovery of Byzantine power, including the enlargement of the Byzantine army and navy.", "It would also include the reconstruction of the city of Constantinople, and the increase of its population.", "He reestablished the University of Constantinople, which would lead to what is regarded as the Paliologian Renaissance during the 14th and 15th centuries.", "It would also be at this time that the focus of the Byzantine military shifted to the Balkans, against the Bulgarians, leaving the Anatolian frontier neglected.", "His successors would also not fix this issue, and the Byzantine civil war made this situation much worse, draining the empire's strength, economy, and resources.", "These internal conflicts lead to the permanent losses of important provinces such as Epirus to the Serbian Empire.", "Eventually, the consequences of these conflicts would allow for the Anatolian beyliks to rise in power, most notably the one of Osman, later called the Ottoman Empire.", "His successors would conquer more parts of the empire, until finally the city of Constantinople itself in 1453, under the leadership of Mehmed II."]], ["Baglan Mailybayev", ["Baglan Mailybayev( in Kazakh \u0411\u0430\u0493\u043b\u0430\u043d \u0410\u0441\u0430\u0443\u0431\u0430\u0439\u04b1\u043b\u044b \u041c\u0430\u0439\u043b\u044b\u0431\u0430\u0435\u0432) was born on 20 May 1975 in Zhambyl region, Kazakhstan.", "His nationality is Kazakh.", "He is a politician of the Republic of Kazakhstan, Deputy Head of the Presidential Administration of the Republic of Kazakhstan, Doctor of Law( 2002)( under the supervision of Professor Zimanov S.Z.- scientific advisor and academician of National Academy of Sciences of the Republic of Kazakhstan) and Ph.D. in Political Science( 1998)."]], ["Irene Palaiologina of Trebizond", ["Irene Palaiologina", "( Greek: \u0395\u03b9\u03c1\u03ae\u03bd\u03b7 \u03a0\u03b1\u03bb\u03b1\u03b9\u03bf\u03bb\u03bf\u03b3\u03af\u03bd\u03b1,\" Eir\u0113n\u0113 Palaiologina\"),( c. 1315 \u2013 after 1341) was Empress of Trebizond from April 6, 1340 to July 17, 1341.", "She was an illegitimate daughter of the Byzantine Emperor Andronikos III Palaiologos, and she married Emperor Basil of Trebizond in 1335."]], ["Eleni Gabre-Madhin", ["Eleni Zaude Gabre- Madhin, an Ethiopian economist with Swiss nationality, is a former Chief Executive Officer of the Ethiopia Commodity Exchange( ECX).", "She has had many years of experience working on agricultural markets \u2013 particularly in Sub- Saharan Africa \u2013 and has held senior positions in the World Bank, the International Food Policy Research Institute( Washington), and United Nations( Geneva)."]], ["Ali Rahuma", ["Ali Khalifa Rahuma( born May 16, 1982) is a Libyan football midfielder who's nationality is Libyan.", "He currently plays for Al- Ittihad, and is a member of the Libya national football team."]], ["John Kantakouzenos (despot)", ["John Kantakouzenos( ca. 1342 \u2013 after 1380) was a Byzantine prince.", "John is an obscure figure.", "Born ca. 1342, he was the eldest son of Matthew Kantakouzenos, co-emperor of the Byzantine Empire in 1353 \u2013 1357, and Irene Palaiologina.", "On Matthew's abdication from the throne in December 1357, John V Palaiologos, now sole emperor, raised John to the supreme court rank of Despot.", "Little is known of John Kantakouzenos thereafter: in 1361 he went to the Morea, where he is again recorded ca. 1380 as the donor of an icon of the Theotokos, now in the church of San Samuele in Venice.", "He may have been the father of Theodore Kantakouzenos, the Byzantine ambassador to France and Venice."]]]
supporting_facts: [["Irene Palaiologina, Empress of Bulgaria", 0], ["Michael VIII Palaiologos", 0]]
evidences: [["Irene Palaiologina", "father", "Michael VIII Palaiologos"], ["Michael VIII Palaiologos", "country of citizenship", "Byzantine"]]
answer: Byzantine