( Angiosperms ( ( are ( ( vascular ( , ( flowering ( , ( seed plants ) ) ) ) ) ( that ( produce seeds ) ) ) ) . ) )
(ROOT (S (NP (NNS Angiosperms)) (VP (VBP are) (NP (NP (NN vascular) (, ,) (NN flowering) (, ,) (NN seed) (NNS plants)) (SBAR (WHNP (WDT that)) (S (VP (VBP produce) (NP (NNS seeds))))))) (. .)))
Angiosperms are    vascular, flowering, seed plants that produce seeds.
(ROOT (S (NP (NNS Angiosperms)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (VBG flowering) (NN seed) (NNS plants))))) (. .)))