Nkebi ahịrịokwu nke 1: Ndị mụrụ ya bụ John the Iron'na nwunye ya Helen nke Lithuania, nwa nwanne Eze Jogaila nke Poland. Nkebi ahịrịokwu nke 2: Ndị mụrụ ya bụ John II " Iron " na nwunye ya Helen nke Lithuania, nwa nwanne Eze Jogaila nke Poland. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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