The kidneys purify the blood by removing these wastes, as well as any extra water.
(The kidneys; purify; the blood) Context(The kidneys purify,List([0, 18))):(The kidneys; purify the blood by removing; these wastes)
The kidneys purify,List([0, 18))
The kidneys The kidneys
purify purify the blood by removing
the blood
these wastes