( ( ( ( ( ( ( The water ) ( in ( Crater Lake ) ) ) ( appears ( to ( be ( bright blue ) ) ) ) ) , ) but ) ( it ( is n't ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN water)) (PP (IN in) (NP (NNP Crater) (NNP Lake)))) (VP (VBZ appears) (S (VP (TO to) (VP (VB be) (NP (JJ bright) (NN blue))))))) (, ,) (CC but) (S (NP (PRP it)) (VP (VBZ is) (RB n't))) (. .)))
The water in Crater Lake appears to be bright blue, but it isn't.
(ROOT (S (NP (NNS Craters) (CC and) (NNS rifts)) (VP (VBP become) (NP (NNS lakes)) (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VBP fill) (PP (IN with) (NP (NN water))))))) (. .)))