an authentically vague , but ultimately purposeless , study in total 
(ROOT (NP (NP (DT an) (ADJP (ADJP (RB authentically) (JJ vague)) (, ,) (CC but) (ADJP (RB ultimately) (JJ purposeless)) (, ,)) (NN study)) (PP (IN in) (ADJP (NN total)))))
(ROOT (NP (NP (DT ) (ADJP (ADJP (RB ) (JJ )) (, ) (CC ) (ADJP (RB ) (JJ )) (, )) (NN )) (PP (IN ) (ADJP (NN )))))