allows his cast the benefit of being able to give full performances 
(ROOT (S (VP (VBZ allows) (NP (PRP$ his) (NN cast)) (NP (NP (DT the) (NN benefit)) (PP (IN of) (S (VP (VBG being) (ADJP (JJ able) (S (VP (TO to) (VP (VB give) (NP (JJ full) (NNS performances)))))))))))))
(ROOT (S (VP (VBZ ) (NP (PRP$ ) (NN )) (NP (NP (DT ) (NN )) (PP (IN ) (S (VP (VBG ) (ADJP (JJ ) (S (VP (TO ) (VP (VB ) (NP (JJ ) (NNS )))))))))))))