( ( ( In ( modern practice ) ) ( , ( ( water ( ( flowing ( from ( a ( higher level ) ) ) ) ( to ( ( a ( lower level ) ) ( -LRB- ( ( as ( from ( a ( ( dam or ) waterfall ) ) ) ) -RRB- ) ) ) ) ) ) ( is ( used ( to ( activate ( ( a turbine ) ( that ( drives ( an ( electric generator ) ) ) ) ) ) ) ) ) ) ) ) ( , ( ( a process ) ( ( called ( hydroelectric ( power generation ) ) ) . ) ) ) )
(ROOT (S (S (PP (IN In) (NP (JJ modern) (NN practice))) (, ,) (NP (NP (NN water)) (VP (VBG flowing) (PP (IN from) (NP (DT a) (JJR higher) (NN level))) (PP (TO to) (NP (NP (DT a) (JJR lower) (NN level)) (PRN (-LRB- -LRB-) (PP (RB as) (IN from) (NP (DT a) (NN dam) (CC or) (NN waterfall))) (-RRB- -RRB-)))))) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB activate) (NP (NP (DT a) (NN turbine)) (SBAR (WHNP (WDT that)) (S (VP (VBZ drives) (NP (DT an) (JJ electric) (NN generator)))))))))))) (, ,) (NP (DT a) (NN process)) (VP (VBD called) (NP (JJ hydroelectric) (NN power) (NN generation))) (. .)))
In modern practice, water flowing from a higher level to a lower level (as from a dam or waterfall) is used to activate a turbine that drives an electric generator, a process called hydroelectric power generation.
(ROOT (S (NP (PRP You)) (VP (MD can) (VP (VB generate) (NP (JJ hydroelectric) (NN power)) (PP (IN with) (NP (NP (DT the) (NN energy)) (VP (VBN found) (PP (IN in) (S (VP (VBG flowing) (NP (NN water)))))))))) (. .)))