<prompt> Bhala ukuqhubeka kwalesi sigaba - UVasilko Konstantinovich ; 7 Disemba 1209, eRostov 4 Mashi 1238, ehlathini laseSherensky wayeyiNkosana yokuqala yaseRostov, eRussia. Wayeyindodana kaConstantine waseRostov, futhi engumyeni kaMaria waseChernigov. Wafela empini yoMfula iSit ngesikhathi amaMongol ehlasela iKievan Rus  <response>: futhi walandelwa yindodana yakhe uBoris. 