( ( Geochemistry ( of ( precipitation ( , ( rivers ( , ( lakes ( , ( groundwater ( , ( and oceans ) ) ) ) ) ) ) ) ) ) ) ; )
(ROOT (NP (NP (NNP Geochemistry)) (PP (IN of) (NP (NNS precipitation) (, ,) (NNS rivers) (, ,) (NNS lakes) (, ,) (NNS groundwater) (, ,) (CC and) (NNS oceans))) (: ;)))
Geochemistry of precipitation, rivers, lakes, groundwater, and oceans;
(ROOT (S (NP (NNP Groundwater)) (ADVP (RB primarily)) (VP (VBZ comes) (PP (IN from) (NP (NN precipitation)))) (. .)))