( ( ( Two-layered sheath ) ( of ECM ) ) ( ( surrounds ( the ( germ tube ) ) ) . ) )
(ROOT (S (NP (NP (JJ Two-layered) (NN sheath)) (PP (IN of) (NP (NNP ECM)))) (VP (VBZ surrounds) (NP (DT the) (NN germ) (NN tube))) (. .)))
Two-layered sheath of ECM surrounds the germ tube.
(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)))) (. .)))