( ( ( Good examples ) ( of ( a ( nonvascular plants ) ) ) ) ( ( are ( the ( ( Liverworts and ) mosses ) ) ) . ) )
(ROOT (S (NP (NP (JJ Good) (NNS examples)) (PP (IN of) (NP (DT a) (NN nonvascular) (NNS plants)))) (VP (VBP are) (NP (DT the) (NNS Liverworts) (CC and) (NNS mosses))) (. .)))
Good examples of                 a nonvascular plants are the Liverworts and mosses.
(ROOT (S (NP (NNP Moss)) (VP (VBZ is) (VP (RBS best) (VBN classified) (PP (IN as) (NP (DT a) (NN nonvascular) (NN plant))))) (. .)))
Moss is best classified as a nonvascular plant.