I mean I'm sure I have read I just can't even remember what, Dr. Zhivago, I read that.
( I ( ( mean ( I ( 'm ( sure ( I ( have ( read ( I ( just ( ( ( ca n't ) even ) ( remember ( ( what ( , ( ( Dr. Zhivago ) , ) ) ) ( I ( read that ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP mean) (SBAR (S (NP (PRP I)) (VP (VBP 'm) (ADJP (JJ sure) (SBAR (S (NP (PRP I)) (VP (VBP have) (VP (VBN read) (SBAR (S (NP (PRP I)) (ADVP (RB just)) (VP (MD ca) (RB n't) (ADVP (RB even)) (VP (VB remember) (SBAR (WHNP (WP what)) (PRN (, ,) (NP (NNP Dr.) (NNP Zhivago)) (, ,)) (S (NP (PRP I)) (VP (VBP read) (NP (DT that)))))))))))))))))) (. .)))
I am pretty certain that I have read something about Dr. Zhivago.
( I ( ( am ( pretty ( certain ( that ( I ( have ( ( read something ) ( about ( Dr. Zhivago ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP am) (ADJP (RB pretty) (JJ certain) (SBAR (IN that) (S (NP (PRP I)) (VP (VBP have) (VP (VBN read) (NP (NN something)) (PP (IN about) (NP (NNP Dr.) (NNP Zhivago))))))))) (. .)))