(S (S (BASENP (NNS Researchers)) (VP (VP (VBP do) (RB n't)) (VP (VB blame) (NP (BASENP (JJ specific) (NNS brands)) (CONJP (COMMA ,) (CC but)) (NP (BASENP (JJ bottled) (NN water)) (PP (IN in) (BASENP (NN general)))))))) (PERIOD .))