that's true i didn't think about that
( that ( 's ( true ( i ( ( did n't ) ( think ( about that ) ) ) ) ) ) )
(ROOT (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (ADJP (JJ true) (SBAR (S (NP (FW i)) (VP (VBD did) (RB n't) (VP (VB think) (PP (IN about) (NP (DT that))))))))))))
That's not true.
( That ( ( ( 's not ) true ) . ) )
(ROOT (S (NP (DT That)) (VP (VBZ 's) (RB not) (ADJP (JJ true))) (. .)))