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