( ( Animals ( with exoskeletons ) ) . )
(ROOT (NP (NP (NNS Animals)) (PP (IN with) (NP (NNS exoskeletons))) (. .)))
Animals with exoskeletons.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (JJ hard) (NN case)) (SBAR (WHNP (WDT that)) (S (VP (VBZ surrounds) (NP (NP (DT the) (JJ soft) (NNS parts)) (PP (IN of) (NP (NP (DT some) (NNS animals)) (NP (DT the) (NN exoskeleton)))))))))) (. .)))