( ( Such conductors ) ( ( ( ( are ( metallic ( looking ( because ( light ( is ( moving ( the electrons ) ) ) ) ) ) ) ) , ) too ) . ) )
(ROOT (S (NP (JJ Such) (NNS conductors)) (VP (VBP are) (ADJP (JJ metallic) (S (VP (VBG looking) (SBAR (IN because) (S (NP (NN light)) (VP (VBZ is) (VP (VBG moving) (NP (DT the) (NNS electrons))))))))) (, ,) (ADVP (RB too))) (. .)))
Such conductors are metallic looking because light is moving the electrons, too.
(ROOT (S (NP (DT A) (NN conductor)) (VP (VBZ allows) (S (NP (NNS electrons)) (VP (TO to) (VP (VB move) (PP (IN in) (NP (DT an) (JJ electrochemical) (NN system)))))))))