( ( The view ) ( ( expressed ( is ( ( ( ( that ( of gradualism ) ) , ) ( not of ) ) ( punctuated equilibrium ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN view)) (VP (VBD expressed) (SBAR (S (VP (VBZ is) (NP (NP (NP (DT that)) (PP (IN of) (NP (NN gradualism)))) (, ,) (CONJP (RB not) (IN of)) (NP (JJ punctuated) (NN equilibrium))))))) (. .)))
The view expressed is that of gradualism, not of punctuated equilibrium.
(ROOT (S (NP (NNP Darwin)) (VP (VBD believed) (PP (IN in) (NP (NN gradualism)))) (. .)))