( ( ( The ( kinetic energy ) ) ( in ( the ( expanding steam ) ) ) ) ( ( spins ( ( turbines , ) ( which ( then ( drive ( generators ( to ( produce electricity ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ kinetic) (NN energy)) (PP (IN in) (NP (DT the) (VBG expanding) (NN steam)))) (VP (VBZ spins) (NP (NP (NNS turbines)) (, ,) (SBAR (WHNP (WDT which)) (S (ADVP (RB then)) (VP (VBP drive) (S (NP (NNS generators)) (VP (TO to) (VP (VB produce) (NP (NN electricity)))))))))) (. .)))
The kinetic energy in the expanding steam spins turbines, which then drive generators to produce electricity.
(ROOT (S (PP (IN Through) (NP (NP (DT a) (NN process)) (VP (VBN called) (NP (JJ electromagnetic) (NN induction))))) (, ,) (NP (NNS generators)) (VP (VBP change) (NP (NP (DT the) (JJ kinetic) (NN energy)) (PP (IN of) (NP (DT a) (JJ spinning) (NN turbine)))) (PP (TO to) (NP (JJ electrical) (NN energy)))) (. .)))