they 're treading water at best in this forgettable effort 
(ROOT (S (NP (PRP they)) (VP (VBP 're) (VP (VBG treading) (NP (NN water)) (ADVP (IN at) (JJS best)) (PP (IN in) (NP (DT this) (JJ forgettable) (NN effort)))))))
(ROOT (S (NP (PRP )) (VP (VBP ) (VP (VBG ) (NP (NN )) (ADVP (IN ) (JJS )) (PP (IN ) (NP (DT ) (JJ ) (NN )))))))