is itself intacto 's luckiest stroke 
(ROOT (VP (VBZ is) (NP (PRP itself)) (NP (NP (NN intacto) (POS 's)) (JJS luckiest) (NN stroke))))
(ROOT (VP (VBZ ) (NP (PRP )) (NP (NP (NN ) (POS )) (JJS ) (NN ))))