now it is a copy of a copy of a copy 
(ROOT (S (ADVP (RB now)) (NP (PRP it)) (VP (VBZ is) (NP (NP (DT a) (NN copy)) (PP (IN of) (NP (NP (DT a) (NN copy)) (PP (IN of) (NP (DT a) (NN copy)))))))))
(ROOT (S (ADVP (RB )) (NP (PRP )) (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NN )))))))))