you 're not merely watching history 
(ROOT (S (NP (PRP you)) (VP (VBP 're) (RB not) (ADVP (RB merely)) (VP (VBG watching) (NP (NN history))))))
(ROOT (S (NP (PRP )) (VP (VBP ) (RB ) (ADVP (RB )) (VP (VBG ) (NP (NN ))))))