that the movie has no idea of it is serious 
(ROOT (S (SBAR (IN that) (S (NP (DT the) (NN movie)) (VP (VBZ has) (NP (NP (DT no) (NN idea)) (PP (IN of) (NP (PRP it))))))) (VP (VBZ is) (ADJP (JJ serious)))))
(ROOT (S (SBAR (IN ) (S (NP (DT ) (NN )) (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (PRP ))))))) (VP (VBZ ) (ADJP (JJ )))))