question: Who is the paternal grandfather of Przemysław Of Toszek?
context: [["Boles\u0142aw I, Duke of Cieszyn", ["Boles\u0142aw I of Cieszyn( \u2013 6 May 1431) was a Duke of half of Bytom and Siewierz from 1405, Duke of Cieszyn and half of both G\u0142og\u00f3w and \u015acinawa from 1410, and Duke of Toszek and Strzelin during 1410 \u2013 1414.", "He was the second son of Przemys\u0142aw I Noszak, Duke of Cieszyn by his wife Elisabeth, daughter of Boles\u0142aw, Duke of Ko\u017ale- Bytom.", "In the chronicle of Jan D\u0142ugosz he is named the eldest son, but this is certainly a mistake, because elsewhere, Przemys\u0142aw of O\u015bwi\u0119cim was always placed before Boles\u0142aw."]], ["Fred Le Deux", ["Frederick\" Fred\" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).", "He is the grandfather of Tom Hawkins."]], ["Margareta of Toszek", ["Margareta of Toszek( 1467/68 \u2013 8 November 1531), was a Polish princess and abbess."]], ["Henry Krause", ["Henry J.\" Red\" Krause, Jr.( August 28, 1913 \u2013 February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.", "He played college football at St. Louis University.", "He is the grandfather of Jennifer Krause", "He is the great grandfather of Payton Hoeing"]], ["Przemys\u0142aw of Toszek", ["Przemys\u0142aw of Toszek  (1425 \u2013 December 1484) was a Duke of O\u015bwi\u0119cim during 1434\u20131445 (with his brothers as co-rulers) and Duke of Toszek since 1445 until his death.", "He was the second son of Duke Casimir I of O\u015bwi\u0119cim by his first wife Anna, daughter of Duke Henry VIII of \u017baga\u0144."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]], ["Boles\u0142aw of Toszek", ["Boles\u0142aw of Toszek( 1276/78 \u2013 December 1328), was a Duke of Toszek since 1303 until his death( from 1315 only formally) and Archbishop of Esztergom from 1321."]], ["Przemys\u0142aw of O\u015bwi\u0119cim", ["Przemys\u0142aw of O\u015bwi\u0119cim( \u2013 1 January 1406) was a Duke of half of both G\u0142og\u00f3w and \u015acinawa since 1404 and Duke of O\u015bwi\u0119cim from 1405 until his death.", "He was the eldest son of Przemys\u0142aw I Noszak, Duke of Cieszyn by his wife Elisabeth, daughter of Boles\u0142aw, Duke of Ko\u017ale- Bytom.", "In the chronicle of Jan D\u0142ugosz he is named the second son, but this is certainly a mistake, because elsewhere, he was always placed in first place before his brother Boles\u0142aw I."]], ["Casimir I of O\u015bwi\u0119cim", ["Casimir I of O\u015bwi\u0119cim  (1396 \u2013 7 April 1434) was a Duke of O\u015bwi\u0119cim since 1406 (under regency until 1414), ruler over Toszek (from 1414) and Strzelin (during 1416\u20131427).", "He was the only child of Duke Przemys\u0142aw of O\u015bwi\u0119cim by his unknown wife."]], ["Kaya Alp", ["Kaya Alp was, according to Ottoman tradition, the son of K\u0131z\u0131l Bu\u011fa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertu\u011frul, and the great grandfather of the Ottoman Empire founder, Osman I."]]]
supporting_facts: [["Przemys\u0142aw of Toszek", 1], ["Casimir I of O\u015bwi\u0119cim", 1]]
evidences: [["Przemys\u0142aw of Toszek", "father", "Casimir I of O\u015bwi\u0119cim"], ["Casimir I of O\u015bwi\u0119cim", "father", "Przemys\u0142aw of O\u015bwi\u0119cim"]]
answer: Przemysław of Oświęcim