( ( ( The heat ) ( from ( ( the ( chain reaction ) ) ( inside ( the reactor ) ) ) ) ) ( ( is ( ( used ( in ( a ( power plant ) ) ) ) ( to ( ( turn water ) ( into ( ( steam , ) ( which ( drives ( a ( turbine-generator ( to ( produce electricity ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN heat)) (PP (IN from) (NP (NP (DT the) (NN chain) (NN reaction)) (PP (IN inside) (NP (DT the) (NN reactor)))))) (VP (VBZ is) (VP (VBN used) (PP (IN in) (NP (DT a) (NN power) (NN plant))) (S (VP (TO to) (VP (VB turn) (NP (NN water)) (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)))))))))))))))) (. .)))
The heat from the chain reaction inside the reactor is used in a power plant to turn water 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))))))))) (. .)))