(S (S (S (BASENP (JJ Black) (NN smoke)) (VP (ADVP (RB usually)) (VP (VBZ indicates) (BASENP (NN burning))))) (COMMA ,) (SBAR (IN whereas) (S (BASENP (JJ white) (NN smoke)) (VP (ADVP (RB often)) (VP (VBZ indicates) (S (BASENP (NN water)) (VP (VP (VBG putting) (PRT (RP out))) (BASENP (DT a) (NN fire))))))))) (PERIOD .))