( Endoskeleton ( of Cockroach ) )
(ROOT (NP (NP (NNP Endoskeleton)) (PP (IN of) (NP (NNP Cockroach)))))
Endoskeleton of Cockroach
(ROOT (S (NP (NNS Humans)) (VP (VBP possess) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN endoskeleton))) (. .)))