question: Who is Konrad Iii The Old's paternal grandfather?
context: [["Konrad V Kantner", ["Konrad V Kantner( ca. 1385 \u2013 10 September 1439) was a duke of Ole\u015bnica, Ko\u017ale, half of Bytom and half of \u015acinawa during 1412 \u2013 1427( with his brothers as co-rulers), since 1427 sole ruler over Ole\u015bnica.", "He was the second son of Konrad III the Old, Duke of Ole\u015bnica, by his wife Judith.", "Like his one older and three younger brothers, at the baptism he received the name of Konrad, which was characteristic in this branch of the House of Piast.", "His nickname of\" Kantner\" was derived from the town of Kanth( pl:\" K\u0105ty Wroc\u0142awskie\"), who was a property of the Ole\u015bnica dukes since 1379."]], ["Servillano Aquino", ["Servillano Aquino y Aguilar", "( April 20, 1874 \u2013 February 3, 1959) was a Filipino general during the Philippine Revolution against Spain( 1896 \u2013 1898), and the Philippine- American War( 1899 \u2013 1902).", "He served as a delegate to the Malolos Congress and was the grandfather of Benigno S.\" Ninoy\" Aquino, Jr..", "He is the great- grandfather of Benigno Aquino III, the 15th President of the Philippines."]], ["Konrad III the Old", ["Konrad III the Old  (\u2013 28 December 1412) was a Duke of Ole\u015bnica, Ko\u017ale, half of Bytom and half of \u015acinawa since 1377 (until 1403 with his father as co-ruler).", "He was the only son of Konrad II the Gray, Duke of Ole\u015bnica, by his wife Agnes, daughter of Casimir I, Duke of Cieszyn."]], ["Konrad IV the Older", ["Konrad IV the Older( ca. 1384 \u2013 9 August 1447) was a Duke of Oels( Ole\u015bnica), Ko\u017ale, half of Bytom and half of \u015acinawa during 1412\u2013 1416( with his brothers as co-rulers), since 1416 sole ruler over K\u0105ty( Kanth), Bierut\u00f3w, Prudnik and Syc\u00f3w and since 1417 Bishop of Wroc\u0142aw and Duke of Nysa.", "He was the eldest son of Konrad III the Old, Duke of Ole\u015bnica, by his wife Judith.", "The name of Konrad was also wore by his four younger brothers; they were identified by historians only through letters and regnal numbers."]], ["Konrad VII the White", ["Konrad VII the White( aft. 1396 \u2013 14 February 1452) was a Duke of Oels/ Ole\u015bnica, Ko\u017ale, half of Bytom and half of \u015acinawa during 1416 \u2013 1427( with his brothers as co-rulers), sole Duke of Ko\u017ale and half of Bytom during 1427 \u2013 1450, Duke of Ole\u015bnica during 1421 \u2013 1450( until 1439 with his brother as co-ruler) and sole Duke of half of \u015acinawa during 1447 \u2013 1450.", "He was the fourth son of Konrad III the Old, Duke of Ole\u015bnica, by his wife Judith.", "Like his three older and one younger brothers, at the baptism he received the name of Konrad, which was characteristic in this branch of the House of Piast."]], ["Konrad II the Gray", ["Konrad II", "the Gray  (ca. 1340 \u2013 10 June 1403)", "was a Duke of Ole\u015bnica, Ko\u017ale and half of Bytom since 1366 and Duke of half of \u015acinawa since 1397 until his death.", "He was the second child but only son of Duke Konrad I of Ole\u015bnica by his second wife Euphemia, daughter of W\u0142adys\u0142aw, Duke of Ko\u017ale-Bytom."]], ["Stanis\u0142aw of Masovia", ["Stanis\u0142aw of Masovia( pl:\" Stanis\u0142aw mazowiecki\"; 17 May 1501 \u2013 8 August 1524), was a Polish prince member of the House of Piast in the Masovian branch.", "He was a Duke of Czersk, Warsaw, Liw, Zakroczym and Nur during 1503- 1524( under regency until 1518) jointly with his brother.", "He was the eldest son of Konrad III the Red and his third wife Anna, a daughter of Mikolaj Radziwi\u0142\u0142\" the Old\", Voivod of Vilnius and the first Grand Chancellor of Lithuania."]], ["Konrad VI the Dean", ["Konrad VI the Dean( ca. 1391 \u2013 3 September 1427) was a Duke of Ole\u015bnica, Ko\u017ale, half of Bytom and half of \u015acinawa since 1416( with his brothers as co-rulers).", "He was the third son of Konrad III the Old, Duke of Ole\u015bnica, by his wife Judith.", "Like his two older and two younger brothers, at his baptism he received the name of Konrad, which was characteristic in this branch of the House of Piast."]], ["Konrad VIII the Younger", ["Konrad VIII the Younger( after 1397 \u2013 before 5 September 1444), was a Duke of Ole\u015bnica, Ko\u017ale, half of Bytom and half of \u015acinawa during 1416 \u2013 1427( with his brothers as co-rulers) and sole Duke of half of \u015acinawa since 1427 until his death.", "He was the fifth and youngest son of Konrad III the Old, Duke of Ole\u015bnica, by his wife Judith.", "Like his four older brothers, at the baptism he received the name of Konrad, which was characteristic in this branch of the House of Piast."]], ["Janusz III of Masovia", ["Janusz III of Masovia( pl:\" Janusz III mazowiecki\"; ca. 27 September 1502 \u2013 9/10 March 1526), was a Polish prince member of the House of Piast in the Masovian branch.", "He was a Duke of Czersk, Warsaw, Liw, Zakroczym and Nur during 1503- 1524( under regency until 1518) jointly with his brother, and sole ruler during 1524- 1526 as the last male member of the Masovian Piasts.", "He was the second son of Konrad III the Red and his third wife Anna, a daughter of Mikolaj Radziwi\u0142\u0142\" the Old\", Voivod of Vilnius and the first Grand Chancellor of Lithuania."]]]
supporting_facts: [["Konrad III the Old", 1], ["Konrad II the Gray", 3]]
evidences: [["Konrad III the Old", "father", "Konrad II the Gray"], ["Konrad II the Gray", "father", "Konrad I of Ole\u015bnica"]]
answer: Konrad I of Oleśnica