( HERBIVORE ( ( An animal ) ( that ( eats ( only plants ) ) ) ) )
(ROOT (S (VP (VB HERBIVORE) (NP (NP (DT An) (NN animal)) (SBAR (WHNP (WDT that)) (S (VP (VBZ eats) (NP (JJ only) (NNS plants)))))))))
HERBIVORE An animal that eats only plants
(ROOT (S (NP (NNS Herbivores)) (VP (VBP are) (NP (NP (NNS heterotrophs)) (SBAR (WHNP (WDT that)) (S (VP (VBP eat) (NP (UCP (ADJP (JJ only)) (CC or) (ADVP (RB mainly))) (NNS plants))))))) (. .)))