be in video stores by christmas 
(ROOT (S (NP (VB be)) (PP (IN in) (NP (NN video) (NNS stores))) (PP (IN by) (NP (NNP christmas)))))
(ROOT (S (NP (VB )) (PP (IN ) (NP (NN ) (NNS ))) (PP (IN ) (NP (NNP )))))