( ( Water lillies ) ( ( are ( one ( of ( the ( most ( ancient ( angiosperm plants ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Water) (NNS lillies)) (VP (VBP are) (NP (NP (CD one)) (PP (IN of) (NP (DT the) (RBS most) (JJ ancient) (NN angiosperm) (NNS plants))))) (. .)))
Water lillies are one of the most ancient angiosperm plants.
(ROOT (S (NP (NNS Angiosperms)) (VP (VBP are) (NP (NP (DT the) (ADJP (RBS most) (JJ successful)) (NN phylum)) (PP (IN of) (NP (NNS plants))))) (. .)))
Angiosperms are the most successful phylum of plants.