(S (S (BASENP (NNP White) (NNP House) (NN spokeswoman) (NNP Dana) (NNP Perino)) (VP (VP (VBD confirmed) (NP (BASENP (DT the) (NN existence)) (PP (IN of) (BASENP (DT the) (NN 2005) (NN document))))) (CC but) (VP (VP (VBD did) (RB not)) (VP (VB say) (SBAR (IN whether) (S (NP (BASENP (NNS techniques)) (PP (JJ such) (PP (IN as) (NP (BASENP (NN head) (NN slapping)) (CC and) (BASENP (NNP waterboarding)))))) (VP (VP (VBP constitute) (QT (DQL ``) (BASENP (NN torture)) (DQR ''))) (PP (IN under) (BASENP (NNP U.S.) (NN law)))))))))) (PERIOD .))