Um, I wish I could think more.
( Um ( , ( I ( ( wish ( I ( could ( think more ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Um)) (, ,) (NP (PRP I)) (VP (VBP wish) (SBAR (S (NP (PRP I)) (VP (MD could) (VP (VB think) (NP (JJR more))))))) (. .)))
I need more time to think.
( I ( ( need ( more ( time ( to think ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP need) (NP (JJR more) (NN time) (S (VP (TO to) (VP (VB think)))))) (. .)))