( ( This ( kinetic energy ) ) ( ( is ( transformed ( into ( ( ( thermal energy ) , ) ( which ( ( in turn ) ( is ( converted ( into electricity ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (JJ kinetic) (NN energy)) (VP (VBZ is) (VP (VBN transformed) (PP (IN into) (NP (NP (JJ thermal) (NN energy)) (, ,) (SBAR (WHNP (WDT which)) (S (PP (IN in) (NP (NN turn))) (VP (VBZ is) (VP (VBN converted) (PP (IN into) (NP (NN electricity))))))))))) (. .)))
This kinetic energy is transformed into thermal energy, which in turn is converted into electricity.
(ROOT (S (NP (NNP Electric) (NNS motors)) (VP (VB transform) (NP (JJ electrical) (NN energy)) (PP (IN into) (NP (JJ kinetic) (NN energy)))) (. .)))
Electric motors transform electrical energy into kinetic energy.