then again , subtlety has never been his trademark 
(ROOT (S (ADVP (RB then) (RB again)) (, ,) (NP (NN subtlety)) (VP (VBZ has) (ADVP (RB never)) (VP (VBN been) (NP (PRP$ his) (NN trademark))))))
(ROOT (S (ADVP (RB ) (RB )) (, ) (NP (NN )) (VP (VBZ ) (ADVP (RB )) (VP (VBN ) (NP (PRP$ ) (NN ))))))