and i don't think they've repainted since
( and ( i ( ( do n't ) ( think ( they ( 've ( repainted since ) ) ) ) ) ) )
(ROOT (FRAG (CC and) (NP (NP (FW i)) (SBAR (S (VP (VBP do) (RB n't) (VP (VB think) (SBAR (S (NP (PRP they)) (VP (VBP 've) (VP (VBN repainted) (PP (IN since)))))))))))))
I'm not sure if they've repainted it since.
( I ( ( ( ( 'm not ) sure ) ( if ( they ( 've ( repainted ( it since ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 'm) (RB not) (ADJP (JJ sure)) (SBAR (IN if) (S (NP (PRP they)) (VP (VBP 've) (VP (VBN repainted) (S (NP (PRP it)) (ADVP (RB since)))))))) (. .)))