marks to take on any life of its own 
(ROOT (NP (NP (NNS marks)) (SBAR (S (VP (TO to) (VP (VB take) (PRT (RP on)) (NP (NP (DT any) (NN life)) (PP (IN of) (NP (PRP$ its) (JJ own))))))))))
(ROOT (NP (NP (NNS )) (SBAR (S (VP (TO ) (VP (VB ) (PRT (RP )) (NP (NP (DT ) (NN )) (PP (IN ) (NP (PRP$ ) (JJ ))))))))))