( Conductors ( ( ( have ( ( a ( ( very low ) resistance ) ) ( to ( electrical current ) ) ) ) ( while ( insulators ( have ( ( a ( ( very high ) resistance ) ) ( to ( electrical current ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Conductors)) (VP (VBP have) (NP (NP (DT a) (ADJP (RB very) (JJ low)) (NN resistance)) (PP (TO to) (NP (JJ electrical) (NN current)))) (SBAR (IN while) (S (NP (NNS insulators)) (VP (VBP have) (NP (NP (DT a) (ADJP (RB very) (JJ high)) (NN resistance)) (PP (TO to) (NP (JJ electrical) (NN current)))))))) (. .)))
Conductors have a very low resistance to electrical current while insulators have a very high resistance to electrical current.
(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)))))))) (. .)))