has only a fleeting grasp of how to develop them 
(ROOT (S (VP (VBZ has) (NP (NP (RB only) (DT a) (JJ fleeting) (NN grasp)) (PP (IN of) (SBAR (WHADVP (WRB how)) (S (VP (TO to) (VP (VB develop) (NP (PRP them)))))))))))
(ROOT (S (VP (VBZ ) (NP (NP (RB ) (DT ) (JJ ) (NN )) (PP (IN ) (SBAR (WHADVP (WRB )) (S (VP (TO ) (VP (VB ) (NP (PRP )))))))))))