( ( Evolution ( of ( speciation ideas ) ) ) ( , ( ( from ( gradualism ( to ( punctuated equilibrium ) ) ) ) . ) ) )
(ROOT (FRAG (NP (NP (NNP Evolution)) (PP (IN of) (NP (NN speciation) (NNS ideas)))) (, ,) (PP (IN from) (NP (NP (NN gradualism)) (PP (TO to) (NP (JJ punctuated) (NN equilibrium))))) (. .)))
Evolution of speciation ideas, from gradualism to punctuated equilibrium.
(ROOT (S (NP (NNP Darwin)) (VP (VBD believed) (PP (IN in) (NP (NN gradualism)))) (. .)))