question: Who is Siemowit Of Dobrzyń's paternal grandmother?
context: [["Tjuyu", ["Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.", "She is the grandmother of Akhenaten, and great grandmother of Tutankhamun."]], ["Hannah Arnold", ["Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children."]], ["Mona Hopton Bell", ["Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.", "She was the grandmother of the painter Jean H. Bell."]], ["Siemowit of Dobrzy\u0144", ["Siemowit of Dobrzy\u0144 (pl: \"", "Siemowit dobrzy\u0144ski\"; c. 1262/67 \u2013 1312), was a Polish prince member of the House of Piast, Duke of Brze\u015b\u0107 Kujawski during 1267\u20131288, Duke of Dobrzy\u0144 during 1288\u20131293, 1295\u20131303 and 1305\u20131312, during 1293\u20131295 in captivity in Lithuania, during 1303\u20131305 deposed, since 1306 hereditary vassal of the Kingdom of Poland.", "He was the fifth son of Casimir I of Kuyavia, but the third born from his third marriage with Euphrosyne, daughter of Casimir I of Opole."]], ["Constance of Wroc\u0142aw", ["Constance of Wroc\u0142aw( c.1221\u201327 \u2013 21 or 23 February 1257) was a Princess of Silesia and the Duchess of Kuyavia.", "She was a member of the Polish House of Piast and mother of Leszek the Black and Ziemomys\u0142 of Kuyavia."]], ["Boles\u0142aw of Kuyavia", ["Boles\u0142aw of Kuyavia( also known as Mieszkowic)( 1159 \u2013 13 September 1195) was a Duke of Kuyavia from 1186 until his death.", "He was the eldest child( but third- born son) of Mieszko III the Old, Duke of Greater Poland and High Duke of Poland in 1173, by his second wife Eudoxia, daughter of Grand Prince Iziaslav II of Kiev."]], ["Margareta of Rawa", ["Margareta of Rawa( 1436/40- betw.", "5 May 1483/1 September 1485), was a member of the House of Piast and by marriage Duchess of Ole\u015bnica, Ko\u017ale and half of Bytom.", "She was the only child of Siemowit V, Duke of Rawa by his wife Margareta, daughter of Jan II of Iron, Duke of Racib\u00f3rz."]], ["Kaoru Hatoyama", ["After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama."]], ["Casimir I of Kuyavia", ["Casimir I of Kuyavia  (c. 1211 \u2013 14 December 1267), was a Polish prince member of the House of Piast, Duke of Kujawy since 1233, ruler over L\u0105d during 1239-1261, ruler over Wyszogr\u00f3d since 1242, Duke of Sieradz during 1247-1261, Duke of \u0141\u0119czyca since 1247 and Duke of Dobrzy\u0144 since 1248.", "He was the second son of Konrad I of Masovia and his wife Agafia of Rus.", "He was probably named after his grandfather, Casimir II the Just."]], ["Hubba bint Hulail", ["Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic\" Nab\u012b\"( Prophet) Muhammad ibn Abdullah."]]]
supporting_facts: [["Siemowit of Dobrzy\u0144", 2], ["Casimir I of Kuyavia", 1]]
evidences: [["Siemowit of Dobrzy\u0144", "father", "Casimir I of Kuyavia"], ["Casimir I of Kuyavia", "mother", "Agafia of Rus"]]
answer: Agafia of Rus