( ( A ( good example ) ) ( ( ( ( is pyrrole ) , ) ( ( a ( five-membered ( heterocyclic amine ) ) ) ( consisting ( of ( ( ( four ( carbon atoms ) ) and ) ( one ( nitrogen atom ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ good) (NN example)) (VP (VBZ is) (ADJP (JJ pyrrole)) (, ,) (NP (NP (DT a) (JJ five-membered) (JJ heterocyclic) (NN amine)) (VP (VBG consisting) (PP (IN of) (NP (NP (CD four) (NN carbon) (NNS atoms)) (CC and) (NP (CD one) (NN nitrogen) (NN atom))))))) (. .)))
A good example is pyrrole, a five-membered heterocyclic amine consisting of four carbon atoms and one nitrogen atom.
(ROOT (S (NP (NNS Amines)) (VP (VBP are) (VP (VBN classified) (PP (VBG according) (PP (TO to) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NN carbon) (NNS atoms)) (VP (VBG bonded) (ADVP (RB directly)) (PP (TO to) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (JJ nitrogen) (NN atom))))))))))) (. .)))