( ( Electric ( insulating material ) ) . )
(ROOT (NP (NP (NNP Electric)) (VP (VBG insulating) (NP (NN material))) (. .)))
Electric insulating material.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (NNS materials)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (NP (JJ high) (NN resistance)) (PP (TO to) (NP (JJ electric) (JJ current) (JJ electric) (NNS insulators)))))))) (. .)))