none of this sounds promising 
(ROOT (S (NP (NP (NN none)) (PP (IN of) (NP (DT this)))) (VP (VBZ sounds) (ADJP (JJ promising)))))
(ROOT (S (NP (NP (NN )) (PP (IN ) (NP (DT )))) (VP (VBZ ) (ADJP (JJ )))))