( ( ( a Superconductor ) ( ( A material ) ( with ( ( zero resistance ) ( to ( ( the flow ) ( of ( electric current ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (DT a) (NN Superconductor)) (NP (NP (DT A) (NN material)) (PP (IN with) (NP (NP (CD zero) (NN resistance)) (PP (TO to) (NP (NP (DT the) (NN flow)) (PP (IN of) (NP (JJ electric) (NN current)))))))) (. .)))
a Superconductor A material with zero resistance to the flow of electric current.
(ROOT (S (NP (NNS Superconductors)) (VP (VBP are) (NP (NP (NNS materials)) (PP (IN with) (NP (NP (DT a) (NN resistivity)) (PP (IN of) (NP (CD zero))))))) (. .)))