of barely defensible sexual violence to keep it interested 
(ROOT (S (PP (IN of) (NP (ADJP (RB barely) (JJ defensible)) (JJ sexual) (NN violence))) (S (VP (TO to) (VP (VB keep) (NP (PRP it)) (S (ADJP (JJ interested))))))))
(ROOT (S (PP (IN ) (NP (ADJP (RB ) (JJ )) (JJ ) (NN ))) (S (VP (TO ) (VP (VB ) (NP (PRP )) (S (ADJP (JJ ))))))))