because it overstays its natural running time 
(ROOT (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ overstays) (NP (PRP$ its) (JJ natural) (NN running) (NN time))))))
(ROOT (SBAR (IN ) (S (NP (PRP )) (VP (VBZ ) (NP (PRP$ ) (JJ ) (NN ) (NN ))))))