that loses sight of its own story 
(ROOT (S (NP (DT that)) (VP (VBZ loses) (NP (NN sight)) (PP (IN of) (NP (PRP$ its) (JJ own) (NN story))))))
(ROOT (S (NP (DT )) (VP (VBZ ) (NP (NN )) (PP (IN ) (NP (PRP$ ) (JJ ) (NN ))))))