Erosion, or the carrying away of sediments by water, is another factor that works to change the river.
(Erosion, or the carrying away of sediments by water; is; another factor that works) (another factor; works; to change the river) Context(another factor works,List([56, 81))):(another factor; works to change; the river)
another factor works,List([56, 81))
Erosion, or the carrying away of sediments by water another factor another factor
is works works to change
another factor that works
to change the river
the river