[[daidokoro-no mado-kara siroi neko-ga kinoo deteit-ta] sono siroi neko]-ga sakana-o tabete-i-ru .
kitchen.GEN window-from white cat.NOM yesterday go-out.PAST that white cat.NOM fish.ACC eat.PROG.PRES
That white cat [that (a white cat) went out from the kitchen window yesterday] is now eating a fish.