( They ( ( ( ( possess ( high ( electrical ( and ( thermal conductivity ) ) ) ) ) ( because ( ( the ( free ( electrons flow ) ) ) ( with ( a ( charge ( or ( heat energy ) ) ) ) ) ) ) ) ( through ( the metal ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP possess) (NP (JJ high) (JJ electrical) (CC and) (JJ thermal) (NN conductivity)) (PP (IN because) (NP (NP (DT the) (JJ free) (NNS electrons) (NN flow)) (PP (IN with) (NP (DT a) (NN charge) (CC or) (NN heat) (NN energy))))) (PP (IN through) (NP (DT the) (NN metal)))) (. .)))
They possess high electrical and thermal conductivity because the free electrons flow with a charge or heat energy through the metal.
(ROOT (S (NP (NNP Metal)) (VP (VBZ conducts) (NP (NP (NN heat) (CC and) (NN electricity)) (ADVP (RB so)) (PP (RB well) (RB because) (IN of) (NP (JJ free) (VBG flowing) (NNS electrons))))) (. .)))