a long , dull procession of despair , 
(ROOT (NP (NP (DT a) (JJ long) (, ,) (JJ dull) (NN procession)) (PP (IN of) (NP (NN despair))) (, ,)))
(ROOT (NP (NP (DT ) (JJ ) (, ) (JJ ) (NN )) (PP (IN ) (NP (NN ))) (, )))