( Electricity ( not ( conducted ( by ( copper wire ) ) ) ) )
(ROOT (S (NP (NNP Electricity)) (VP (RB not) (VBN conducted) (PP (IN by) (NP (NN copper) (NN wire))))))
Electricity not conducted by copper wire
(ROOT (S (NP (NN Copper)) (VP (VBZ conducts) (NP (NP (NN electricity)) (NP (DT the) (JJS best)))) (. .)))