( plastics ( ( ( ( allow ( ( quick manufacture ) ( of ( an insulator ) ) ) ) , ) ( for example ) ) . ) )
(ROOT (S (NP (NNS plastics)) (VP (VBP allow) (NP (NP (JJ quick) (NN manufacture)) (PP (IN of) (NP (DT an) (NN insulator)))) (, ,) (PP (IN for) (NP (NN example)))) (. .)))
plastics allow quick manufacture of an insulator, for example.
(ROOT (S (NP (NNP Rubber)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (NP (DT a) (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-) (NNS insulators)) (SBAR (WHNP (WDT that)) (S (VP (VBZ does) (RB not) (VP (VB allow) (S (NP (NNS electrons)) (VP (TO to) (VP (VB move) (PP (IN through) (NP (PRP them)))))))))))))) (. .)))