i enjoyed the movie in a superficial way , while never sure what its purpose was . 
(ROOT (S (NP (PRP i)) (VP (VBD enjoyed) (NP (DT the) (NN movie)) (PP (IN in) (NP (DT a) (JJ superficial) (NN way))) (, ,) (SBAR (IN while) (S (ADVP (RB never)) (ADJP (JJ sure) (SBAR (WHNP (WP what)) (S (NP (PRP$ its) (NN purpose)) (VP (VBD was)))))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBD ) (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ))) (, ) (SBAR (IN ) (S (ADVP (RB )) (ADJP (JJ ) (SBAR (WHNP (WP )) (S (NP (PRP$ ) (NN )) (VP (VBD )))))))) (. )))