( They ( ( are ( ( nocturnal carnivores ) ( that ( feed ( on ( aquatic animals ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP are) (NP (NP (JJ nocturnal) (NNS carnivores)) (SBAR (WHNP (WDT that)) (S (VP (VBP feed) (PP (IN on) (NP (JJ aquatic) (NNS animals)))))))) (. .)))
They are nocturnal carnivores that feed on aquatic animals.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT an) (NN animal)) (SBAR (WHNP (WDT that)) (S (VP (VBZ feeds) (PP (IN on) (NP (NP (JJ other) (NNS animals)) (SBAR (S (NP (DT a) (-LRB- -LRB-) (NN n) (-RRB- -RRB-)) (VP (VBP carnivore))))))))))) (. .)))