( ( The tortoise ) ( ( has ( both ( ( ( an endoskeleton ) and ) ( an exoskeleton ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN tortoise)) (VP (VBZ has) (NP (PDT both) (NP (DT an) (NN endoskeleton)) (CC and) (NP (DT an) (NN exoskeleton)))) (. .)))
The tortoise has both an endoskeleton and an exoskeleton .
(ROOT (S (NP (NNS Humans)) (VP (VBP possess) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN endoskeleton))) (. .)))