Complex sentence: In the ceremony, the guts of the cow will be given to the stone and the rest is thrown into the lake, so the crowd will rush into the water with cutlasses and axes to take their share of the meat.
Split into simpler sentences: In the ceremony, the cow's innards are given to the stone and the rest is thrown into the lake. The crowd rushes into the water with cutlasses and axes to take their share of the meat.