( ( The tablet ) ( ( consists ( of ( two layers ) ) ) . ) )
(ROOT (S (NP (DT The) (NN tablet)) (VP (VBZ consists) (PP (IN of) (NP (CD two) (NNS layers)))) (. .)))
The tablet consists of two layers.
(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)))) (. .)))