( ( ( The debate ) ( between ( ( ( ( the supporters ) ( of ( punctuated equilibrium ) ) ) and ) ( those ( of ( phyletic gradualism ) ) ) ) ) ) ( ( is ( indicative ( of ( a ( ( ( robust and ) exciting ) science ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN debate)) (PP (IN between) (NP (NP (NP (DT the) (NNS supporters)) (PP (IN of) (NP (JJ punctuated) (NN equilibrium)))) (CC and) (NP (NP (DT those)) (PP (IN of) (NP (JJ phyletic) (NN gradualism))))))) (VP (VBZ is) (ADJP (JJ indicative) (PP (IN of) (NP (DT a) (ADJP (JJ robust) (CC and) (JJ exciting)) (NN science))))) (. .)))
The debate between the supporters of punctuated equilibrium and those of phyletic gradualism is indicative of a robust and exciting science.
(ROOT (S (NP (NNP Darwin)) (VP (VBD believed) (PP (IN in) (NP (NN gradualism)))) (. .)))