(S (S (BASENP (NNP Mr) (NNP Powers)) (VP (VBD said) (SBAR (IN that) (S (NP (BASENP (NNP Barry) (NNP Matthews)) (PRN (COMMA ,) (NP (BASENP (JJ chief) (NN executive)) (PP (IN of) (NP (BASENP (DT the) (NNP Department)) (PP (IN of) (BASENP (NNPS Corrections)))))) (COMMA ,))) (VP (VP (VBZ does) (RB not)) (VP (VB know) (SBAR (WHNP (WP what)) (S (VP (VBZ is) (VP (VBG happening) (PP (IN in) (BASENP (PRPD his) (NNS prisons))))))))))))) (PERIOD .))