( Mosses ( ( are ( nonvascular plants ) ) . ) )
(ROOT (S (NP (NNS Mosses)) (VP (VBP are) (NP (NN nonvascular) (NNS plants))) (. .)))
Mosses are nonvascular plants.
(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.