does n't quite know how to fill a frame 
(ROOT (S (VP (VBZ does) (RB n't) (ADVP (RB quite)) (VP (VB know) (SBAR (WHADVP (WRB how)) (S (VP (TO to) (VP (VB fill) (NP (DT a) (NN frame))))))))))
(ROOT (S (VP (VBZ ) (RB ) (ADVP (RB )) (VP (VB ) (SBAR (WHADVP (WRB )) (S (VP (TO ) (VP (VB ) (NP (DT ) (NN ))))))))))