( ( Heterotrophic plants ) ( has ( ( only 4 ) types ) ) )
(ROOT (S (NP (JJ Heterotrophic) (NNS plants)) (VP (VBZ has) (NP (QP (RB only) (CD 4)) (NNS types)))))
Heterotrophic plants has only 4 types
(ROOT (S (NP (DT The) (NN heterotroph)) (VP (VBZ eats) (NP (UCP (ADJP (JJ only)) (CC or) (ADVP (RB mainly))) (NNS plants))) (. .)))