Groundwater moves very slowly, remember it is held in spaces within rock and soil.
(Groundwater moves very slowly; remember; it is held in spaces within rock and soil) Context(Groundwater moves very slowly remember,List([0, 39))):(it; is held; L:in spaces within rock and soil)
Groundwater moves very slowly remember,List([0, 39))
Groundwater moves very slowly it
remember is held
it is held in spaces within rock and soil
L:in spaces within rock and soil