( ( ( ( ( The study ) ( of ( surface ( ( water and ) groundwater ) ) ) ) , ) ( with ( emphasis ( on groundwater ) ) ) ) . )
(ROOT (NP (NP (DT The) (NN study)) (PP (IN of) (NP (NN surface) (NN water) (CC and) (NN groundwater))) (, ,) (PP (IN with) (NP (NP (NN emphasis)) (PP (IN on) (NP (NN groundwater))))) (. .)))
The study of surface water and groundwater, with emphasis on groundwater.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (S (NP (DT the) (NN ground)) (VP (VBZ absorbs) (NP (DT the) (NN water)))) (CC and) (S (NP (PRP it)) (VP (VBZ settles) (PP (IN below) (NP (DT the) (NN surface))))))) (NP (PRP it)) (VP (VBZ is) (VP (VBN called) (NP (NN groundwater)))) (. .)))