( ( ( The ( most common ) ) ( of ( ( this type ) ( of membrane ) ) ) ) ( ( are ( cellulose ( ( acetate and ) Cuprophane ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (RBS most) (JJ common)) (PP (IN of) (NP (NP (DT this) (NN type)) (PP (IN of) (NP (NNP membrane)))))) (VP (VBP are) (ADJP (RB cellulose) (JJ acetate) (CC and) (JJ Cuprophane))) (. .)))
The most common of this type of membrane are cellulose acetate and Cuprophane.
(ROOT (S (NP (NNP Cellulose)) (VP (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (JJ biochemical) (NNS compounds)) (PP (IN on) (NP (NN earth))))))) (CC and) (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (DT all) (NNS plants)))))) (. .)))