is ok for a movie to be something of a sitcom apparatus 
(ROOT (VP (VBZ is) (ADJP (JJ ok)) (SBAR (IN for) (S (NP (DT a) (NN movie)) (VP (TO to) (VP (VB be) (NP (NP (NN something)) (PP (IN of) (NP (DT a) (NN sitcom)))))))) (NN apparatus)))
(ROOT (VP (VBZ ) (ADJP (JJ )) (SBAR (IN ) (S (NP (DT ) (NN )) (VP (TO ) (VP (VB ) (NP (NP (NN )) (PP (IN ) (NP (DT ) (NN )))))))) (NN )))