just enough insight to keep it from being simpleminded 
(ROOT (NP (ADJP (RB just) (JJ enough)) (NN insight) (S (VP (TO to) (VP (VB keep) (NP (PRP it)) (PP (IN from) (S (VP (VBG being) (ADJP (VBN simpleminded))))))))))
(ROOT (NP (ADJP (RB ) (JJ )) (NN ) (S (VP (TO ) (VP (VB ) (NP (PRP )) (PP (IN ) (S (VP (VBG ) (ADJP (VBN ))))))))))