Assertion: rurik dynasty | /r/CapableOf | undergo major schism
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Source sentences:
text: The Rurik dynasty underwent a major schism after the death of Yaroslav the Wise in 1054, dividing into three branches on the basis of descent from three successive ruling Grand Princes: Izyaslav (1024–1078), Svyatoslav (1027–1076), and Vsevolod (1030–1093).