( ( consists ( of ( two lobes ) ) ) ( ( ( ( connected ( by ( an isthmus ) ) ) and ) ( surrounded ( by ( ( a capsule ) ( -LRB- ( ( ( double layers ) ( of CT ) ) -RRB- ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP consists)) (PP (IN of) (NP (CD two) (NNS lobes)))) (VP (VP (VBN connected) (PP (IN by) (NP (DT an) (NN isthmus)))) (CC and) (VP (VBN surrounded) (PP (IN by) (NP (NP (DT a) (NN capsule)) (PRN (-LRB- -LRB-) (NP (NP (JJ double) (NNS layers)) (PP (IN of) (NP (NNP CT)))) (-RRB- -RRB-)))))) (. .)))
consists of two lobes connected by an isthmus and surrounded by a capsule (double layers of CT).
(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)))) (. .)))