( ( In ( most ( electric ( power plants ) ) ) ) ( , ( water ( ( is ( ( ( heated and ) converted ) ( into ( ( steam , ) ( which ( drives ( a ( turbine-generator ( to ( produce electricity ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (JJS most) (JJ electric) (NN power) (NNS plants))) (, ,) (NP (NN water)) (VP (VBZ is) (VP (VBN heated) (CC and) (VBN converted) (PP (IN into) (NP (NP (NN steam)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ drives) (NP (DT a) (NN turbine-generator) (S (VP (TO to) (VP (VB produce) (NP (NN electricity))))))))))))) (. .)))
In most electric power plants, water is heated and converted into steam, which drives a turbine-generator to produce electricity.
(ROOT (S (NP (DT This) (NN heat)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB convert) (NP (NN water)) (PP (IN into) (NP (NP (NN steam)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (ADVP (RB then)) (VP (VBN used) (S (VP (TO to) (VP (VB turn) (NP (DT a) (NN turbine))))))))))) (, ,) (S (ADVP (RB thus)) (VP (VBG generating) (NP (JJ electrical) (NN power))))))))) (. .)))