( ( elaborate ( cell ( wall structures ) ) ) ; )
(ROOT (S (VP (VB elaborate) (NP (NN cell) (NN wall) (NNS structures))) (: ;)))
elaborate cell wall structures;
(ROOT (S (NP (DT A) (NN cell) (NN wall)) (VP (VBZ is) (RB not) (ADJP (JJ present) (PP (IN in) (NP (NN animal) (NNS cells))))) (. .)))