( ( For example ) ( , ( ( if ( ( ( the ( rubber covering ) ) ( of ( a wire ) ) ) ( is ( ( split or ) broken ) ) ) ) ( , ( it ( ( ( would not ) ( ( protect ( a person ) ) ( from ( ( the electricity ) ( in ( the wire ) ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (PP (IN For) (NP (NN example))) (, ,) (SBAR (IN if) (S (NP (NP (DT the) (NN rubber) (NN covering)) (PP (IN of) (NP (DT a) (NN wire)))) (VP (VBZ is) (VP (VBN split) (CC or) (VBN broken))))) (, ,) (NP (PRP it)) (VP (MD would) (RB not) (VP (VB protect) (NP (DT a) (NN person)) (PP (IN from) (NP (NP (DT the) (NN electricity)) (PP (IN in) (NP (DT the) (NN wire))))))) (. .)))
For example, if the rubber covering of a wire is split or broken, it would not protect a person from the electricity in the wire.
(ROOT (S (NP (JJ Electrical) (NNS wires)) (VP (VBP are) (ADVP (RB usually)) (VP (VBN covered) (PP (IN with) (NP (NN plastic) (CC or) (NN rubber))) (S (VP (TO to) (VP (VB insulate) (NP (DT the) (JJ electrical) (NN wire))))))) (. .)))
Electrical wires are usually covered with plastic or rubber to insulate the electrical wire.