 "process paragraph : : A blood clot forms in the break. Cells in the clot keep foreign objects out. Cells create a soft callous. Minerals are added to the callous. The callous hardens because of the minerals. The callous is removed by other cells. Excess bone is removed. The bone is restored to its initial shape and strength. ", "event : Cells in the clot keep foreign objects out.", "entity : blood clot" 
 known location 