question: Who is Hedwig Of Münsterberg-Oels's maternal grandfather?
context: [["Albert I, Duke of M\u00fcnsterberg-Oels", ["Albert I of M\u00fcnsterberg- Oels( or; or; 3 August 1468, Kun\u011btick\u00e1 Hora Castle \u2013 12 July 1511, Prost\u011bjov) was a member of the House of Pod\u011bbrady and a Duke of the Silesian duchies of M\u00fcnsterberg and Ole\u015bnica and Count of Kladsko."]], ["Henry II, Duke of M\u00fcnsterberg-Oels", ["Henry II of M\u00fcnsterberg-Oels (also known as:\"Henry II of Pod\u011bbrady\", or , ; 29 March 1507 \u2013 2 August 1548, Bierut\u00f3w) was from 1536 to 1542 Duke of M\u00fcnsterberg and of Oels (\"Ole\u015bnica\") and from 1542 to 1548 Duke of Bernstadt (\"Bierut\u00f3w\").", "He also held the title of Count of Glatz (\"Kladsko\"), though he never actually ruled the County itself."]], ["Anna of Sagan", ["Anna of Sagan (Polish: \"Anna \u017caga\u0144ska\",", "Czech: \"Anna Zah\u00e1\u0148sk\u00e1\", also \"Hlohovsko-Zah\u00e1\u0148sk\u00e1\" or \"Zah\u00e1\u0148sko-Hlohovsk\u00e1\")", "(b. ca.", "1480, d. 27 or 28 October 1541) was the last surviving member of the G\u0142og\u00f3w-\u017baga\u0144 branch of the Silesian Piasts family, and by marriage duchess of M\u00fcnsterberg and Oels.", "She was the daughter of Prince Jan II the Mad.", "On 7 January 1488 she married Duke Charles I of M\u00fcnsterberg-Oels, with whom she had twelve children:", "She died on 27 or 28 October 1541 and was buried alongside her husband in the parish church of St. Anna in Frankenstein."]], ["Joachim of M\u00fcnsterberg-Oels", ["Joachim of M\u00fcnsterberg( or\" Joachim of M\u00fcnsterberg- Oels\"), also: Joachim of Pod\u011bbrady( German:\" Joachim von Podiebrad\"; Czech:\" J\u00e1chym z Pod\u011bbrad\")( 18 January 1503 \u2013 27 December 1562), a member of the Podiebrad family, was Silesian duke of M\u00fcnsterberg and Oels from 1536 to 1542.", "He also held the title of a Count of Kladsko( K\u0142odzko), though he never actually ruled the county.", "From 1545 to 1560 he was Prince- Bishop of Brandenburg."]], ["Karl Friedrich I, Duke of M\u00fcnsterberg-Oels", ["Karl Friedrich I of M\u00fcnsterberg-Oels (also: Karl Friedrich I of Pod\u011bbrady; or ; ; 18 October 1593, Ole\u015bnica \u2013 31 May 1647, Ole\u015bnica) was Duke of Oels from 1617 to 1647 and Duke of Bernstadt from 1639 to 1647.", "He also held the titles of Duke of M\u00fcnsterberg and Count of Glatz."]], ["Hedwig of M\u00fcnsterberg-Oels", ["Hedwig of Munsterberg-Oels (10/12 June 1508, Ole\u015bnica \u2013 28 November 1531, Legnica) was born Duchess of M\u00fcnsterberg and Ole\u015bnica and Countess of Kladsko and by marriage Margravine of Brandenburg-Ansbach-Kulmbach.", "Hedwig was a daughter of Duke Charles I of M\u00fcnsterberg-Oels, who was a grandson of the King George of Bohemia.", "Her mother was Anna of Sagan, a daughter of John II, the last Duke of \u017baga\u0144 (Sagan).", "On 9 January 1525 Hedwig married Margrave George of Brandenburg-Ansbach-Kulmbach.", "She was George's second wife.", "The marriage produced two daughters:", "Hedwig died in Legnica (Liegnitz), where she was buried."]], ["Henry II, Duke of M\u00fcnsterberg", ["Henry II of M\u00fcnsterberg( \u2013 11 March 1420) was Duke of M\u00fcnsterberg( Zi\u0119bice) since 1410 until his death( as co-ruler of his brother John I).", "He was the third son of Duke Bolko III of M\u00fcnsterberg by his wife Euphemia, daughter of Duke Boles\u0142aw of Bytom."]], ["Henry III, Duke of M\u00fcnsterberg-Oels", ["Henry III of M\u00fcnsterberg- Oels( also:\" Henry III of Pod\u011bbrady Henry III of Bernstadt\";;; 29 April 1542, Ole\u015bnica \u2013 10 April 1587, Ole\u015bnica) was Duke of M\u00fcnsterberg from 1565 to 1574 and Duke of Bernstadt.", "He also held the title of Count of Glatz."]], ["Bolko III of M\u00fcnsterberg", ["Bolko III of M\u00fcnsterberg( \u2013 13 June 1410) was a Duke of M\u00fcnsterberg( Zi\u0119bice) from 1358 until his death, and ruler over Gleiwitz( Gliwice) during 1369 \u2013 1373.", "He was the eldest son of Nicholas the Small, Duke of M\u00fcnsterberg, by his wife Agnes, daughter of Herman Kru\u0161ina of Lichtenberg."]], ["George II, Duke of M\u00fcnsterberg-Oels", ["George II of M\u00fcnsterberg- Oels( also:\" George II of Pod\u011bbrady\";,; 30 April 1512 in Ole\u015bnica \u2013 13 January 1553 in Ole\u015bnica) was a Duke of M\u00fcnsterberg 1536- 1542 and Duke of Oels.", "He also held the title of a Count of Glatz."]]]
supporting_facts: [["Hedwig of M\u00fcnsterberg-Oels", 2], ["Anna of Sagan", 4]]
evidences: [["Hedwig of M\u00fcnsterberg-Oels", "mother", "Anna of Sagan"], ["Anna of Sagan", "father", "Jan II the Mad"]]
answer: Jan II the Mad