a movie you observe , rather than one you enter into . 
(ROOT (NP (NP (NP (DT a) (NN movie)) (SBAR (S (NP (PRP you)) (VP (VBP observe))))) (, ,) (CONJP (RB rather) (IN than)) (NP (NP (CD one)) (SBAR (S (NP (PRP you)) (VP (VBP enter) (PP (IN into)))))) (. .)))
(ROOT (NP (NP (NP (DT ) (NN )) (SBAR (S (NP (PRP )) (VP (VBP ))))) (, ) (CONJP (RB ) (IN )) (NP (NP (CD )) (SBAR (S (NP (PRP )) (VP (VBP ) (PP (IN )))))) (. )))