( ( Unlike ( herbivores ( that ( ( eat mainly ) plants ) ) ) ) ( , ( carnivores ( ( eat ( mainly ( other animals ) ) ) . ) ) ) )
(ROOT (S (PP (IN Unlike) (NP (NP (NNS herbivores)) (SBAR (WHNP (WDT that)) (S (VP (VBP eat) (ADVP (RB mainly)) (NP (NNS plants))))))) (, ,) (NP (NNS carnivores)) (VP (VBP eat) (NP (RB mainly) (JJ other) (NNS animals))) (. .)))
Unlike    herbivores that eat mainly plants, carnivores eat mainly other animals.
(ROOT (S (NP (NNP Carnivore)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN for) (NP (NP (DT a) (NN heterotroph)) (SBAR (WHNP (WDT that)) (S (VP (VBZ eats) (NP (UCP (ADVP (RB only)) (CC or) (ADJP (RB mainly) (JJ animal))) (NNS foods))))))))) (. .)))