question: When is Bakaffa's father's birthday?
context: [["Bakaffa", ["Bakaffa (Ge'ez \u1260\u12ab\u134b) (throne name A\u1e63ma Giyorgis , later Masih Sagad Ge'ez \u1218\u1232\u1205 \u1230\u1308\u12f5, \"to whom the anointed bows\") was \"n\u0259gus\u00e4 n\u00e4g\u00e4st\" (May 18, 1721 \u2013 September 19, 1730) of Ethiopia, and a member of the Solomonic dynasty.", "He was a son of Emperor Iyasu I and brother to Emperors Tekle Haymanot I and Dawit III.", "James Bruce describes Bakaffa as faced with the increasing enfeeblement of the Ethiopian Empire as well as growing intrigue and conspiracies.", "To respond to these challenges, writes Bruce, Bakaffa was \"silent, secret, and unfathomable in his designs, surrounded by soldiers who were his own slaves, and by new men of his own creation.", "\"", "In writing his account of this Emperor's reign, Bruce claims that at the time of his writing no \"Royal Chronicle\" of his reign existed, because it \"would have been a very dangerous book to have been kept in Bacuffa's time; and, accordingly, no person chose ever to run that risk; and the king's particular behaviour afterwards had still the further effect, that nobody would supply this deficiency after his death, a general belief prevailing in Abyssinia that he is alive to this day, and will appear again in all his terrors.", "\" As a result, Bruce's account of Bakaffa's reign consists of a collection of impressionistic vignettes of selected events\u2014his travels through Ethiopia in disguise, his feigned death, his first meetings with people who were to play an important role during his rule\u2014which support this portrait.", "In contrast, the editor of the 1805 edition of Bruce's work, Alexander Murray, excised all but the first two paragraphs of his chapter on this ruler, replacing Bruce's material with a summary of a chronicle of the reign, stating that \"the annals of this period are very complete, the public transactions of Bacuffa are well known, though his motives seldom escaped from his own impenetrable breast.\""]], ["Les Richards", ["Les Richards( date of birth unknown) was an Australian rules footballer who played with North Melbourne in the Victorian Football League( VFL)."]], ["Terence Robinson", ["Terence D. Robinson( date of birth and death unknown) was a male wrestler who competed for England."]], ["Theodred II (Bishop of Elmham)", ["Theodred II was a medieval Bishop of Elmham.", "The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997."]], ["Iyasu I", ["Iyasu I (or Joshua I, Ge'ez: \u12a2\u12eb\u1231 \u1369), also known as Iyasu the Great, was \"n\u0259gus\u00e4 n\u00e4g\u00e4st\"", "(throne name Adyam Sagad, Ge'ez: \u12a0\u12f5\u12eb\u121d \u1230\u1308\u12f5, \"to whom the confines of the earth bow\"), (1654 \u2013 13 October 1706)", "r. 19 July 1682 \u2013 13 October 1706 of Ethiopia, and a member of the Solomonic dynasty.", "He was the son of Yohannes", "I and Empress Sabla Wangel.", "According to G.W.B Huntingford, Iyasu \"owed his reputation partly to the mildness of his character, exemplified in his treatment of the princes on Wehni in his first year, and his attention to religious matters, and partly to his abdication, retirement, and murder.\"", "He was serving as governor of Gojjam when his father Yohannes summoned him and made him heir at the age of 20.", "(However, he did not have himself crowned until 1693.)", "During the first year of his reign, he attended to his brothers and other relatives imprisoned on Wehni, a moment recorded by James Bruce who describes how the Emperor replaced their rags with proper clothing and furnished the starving royals with a banquet."]], ["Moffat Sinkala", ["Moffat Sinkala( date of birth unknown, died June 2004) was a Zambian footballer.", "He competed in the men's tournament at the 1980 Summer Olympics."]], ["Mark Kenneth Woods", ["Mark Kenneth Woods( date of birth unknown) is a Canadian comedy writer, actor, producer, director and TV host."]], ["Etan Boritzer", ["Etan Boritzer( born 1950) is an American writer of children \u2019s literature who is best known for his book\" What is God?\" first published in 1989.", "His best selling\" What is?\" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.", "Boritzer gained national critical acclaim after\" What is God?\" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.", "The other current books in the\" What is?\" series include", "What is Love?,", "What is Death?,", "What is Beautiful?,", "What is Funny?,", "What is Right?,", "What is Peace?,", "What is Money?,", "What is Dreaming?,", "What is a Friend?,", "What is True?,", "What is a Family?,", "What is a Feeling?\"", "The series is now also translated into 15 languages.", "Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.", "His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.", "Boritzer now lives in Venice, California and maintains his publishing office there also.", "He has helped numerous other authors to get published through\" How to Get Your Book Published!\" programs.", "Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.", "He is also recognized nationally as an erudite speaker on\" The Teachings of the Buddha.\""]], ["Pamela Jain", ["Pamela Jain is an Indian playback singer.", "Date of Birth:16th March."]], ["Brian Saunders (weightlifter)", ["Brian Saunders( date of birth and death unknown) was a male weightlifter who competed for England."]]]
supporting_facts: [["Bakaffa", 1], ["Iyasu I", 1]]
evidences: [["Bakaffa", "father", "Iyasu I"], ["Iyasu I", "date of birth", "1654"]]
answer: 1654