in such a potentially sudsy set-up 
(ROOT (PP (IN in) (NP (PDT such) (DT a) (ADJP (RB potentially) (JJ sudsy)) (NN set) (HYPH -) (NN up))))
(ROOT (PP (IN ) (NP (PDT ) (DT ) (ADJP (RB ) (JJ )) (NN ) (HYPH ) (NN ))))