( ( The ( equilibrium configuration ) ) ( ( consists ( of ( ( ( three layers ) , ) ( where ( ( an inhomogeneous ) ( magnetised ( ( plasma slab ) ( is ( surrounded ( by ( ( ( two homogeneous ) magnetised ) ( semi-infinite ( plasma regions ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN equilibrium) (NN configuration)) (VP (VBZ consists) (PP (IN of) (NP (NP (CD three) (NNS layers)) (, ,) (SBAR (WHADVP (WRB where)) (S (NP (DT an) (NNS inhomogeneous)) (VP (VBD magnetised) (SBAR (S (NP (NN plasma) (NN slab)) (VP (VBZ is) (VP (VBN surrounded) (PP (IN by) (NP (ADJP (NP (CD two) (NNS homogeneous)) (JJ magnetised)) (JJ semi-infinite) (NN plasma) (NNS regions))))))))))))) (. .)))
The equilibrium configuration consists of three layers, where an inhomogeneous magnetised plasma slab is surrounded by two homogeneous magnetised semi-infinite plasma regions.
(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)))) (. .)))