keep it from being simpleminded 
(ROOT (S (VP (VB keep) (NP (PRP it)) (PP (IN from) (S (VP (VBG being) (ADJP (VBN simpleminded))))))))
(ROOT (S (VP (VB ) (NP (PRP )) (PP (IN ) (S (VP (VBG ) (ADJP (VBN ))))))))