( Metals ( ( ( are ( good conductors ) ) ( because ( ( metal atoms ) ( readily ( release ( electrons ( to ( carry ( the current ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Metals)) (VP (VBP are) (NP (JJ good) (NNS conductors)) (SBAR (IN because) (S (NP (NN metal) (NNS atoms)) (ADVP (RB readily)) (VP (VB release) (S (NP (NNS electrons)) (VP (TO to) (VP (VB carry) (NP (DT the) (JJ current))))))))) (. .)))
Metals are good conductors because metal atoms readily release electrons to carry the current.
(ROOT (S (NP (NP (NNS Atoms)) (PP (IN of) (NP (NNS metals)))) (VP (VBP are) (NP (NP (JJ good) (NNS conductors)) (PP (IN of) (NP (NN electricity)))) (SBAR (IN because) (S (NP (PRP they)) (VP (VB give) (PRT (RP up)) (NP (NNS electrons)))))) (. .)))