But Fish is not an upbeat pragmatist.
( But ( Fish ( ( ( is not ) ( an ( upbeat pragmatist ) ) ) . ) ) )
(ROOT (S (CC But) (NP (NN Fish)) (VP (VBZ is) (RB not) (NP (DT an) (JJ upbeat) (NN pragmatist))) (. .)))
Fish is an upbeat pragmatist. 
( Fish ( ( is ( an ( upbeat pragmatist ) ) ) . ) )
(ROOT (S (NP (NN Fish)) (VP (VBZ is) (NP (DT an) (JJ upbeat) (NN pragmatist))) (. .)))