 Simbira ku birimwo Imice Urupapuro rwitangiriro Ibiyaga binini Afrika Mpuzamahanga Imikino Video Urupapuro rwitangiriro Ibiyaga binini Afrika Mpuzamahanga Imikino Video Inyabu zihuriye hehe no guhona, ubusumyi bwurusaku canke Isaac Newton? 