( ( Self ( damping conductors ) ) ( ( consists ( of ( ( ( ( a ( central core ) ) ( of one ) ) or ) ( ( more ( round ( steel wires ) ) ) ( surrounded ( by ( ( two layers ) ( of ( ( trapezoidal shaped ) ( aluminum wires ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Self) (NNP damping) (NNS conductors)) (VP (VBZ consists) (PP (IN of) (NP (NP (NP (DT a) (JJ central) (NN core)) (PP (IN of) (NP (CD one)))) (CC or) (NP (NP (JJR more) (NN round) (NN steel) (NNS wires)) (VP (VBN surrounded) (PP (IN by) (NP (NP (CD two) (NNS layers)) (PP (IN of) (NP (ADJP (JJ trapezoidal) (JJ shaped)) (NN aluminum) (NNS wires)))))))))) (. .)))
Self damping conductors consists of a central core of one or more round steel wires surrounded by two layers of trapezoidal shaped aluminum wires.
(ROOT (S (NP (NP (DT The) (NN pleura)) (SBAR (WHNP (WDT that)) (S (VP (VBZ surrounds) (NP (DT the) (NNS lungs)))))) (VP (VBZ consists) (PP (IN of) (NP (CD two) (NNS layers)))) (. .)))