(S (S (PP (VBG According) (PP (TO to) (NP (BASENP (JJ anonymous) (NNS sources)) (VP (VBN cited) (PP (IN in) (BASENP (DT The) (NNP New) (NNP York) (NNP Times) (NN article))))))) (COMMA ,) (S (BASENP (DT the) (JJ classified) (NN 2005) (JJ legal) (NN opinion)) (VP (VP (VBD contained) (QT (DQL ``) (QTC (NP (BASENP (DT an) (JJ expansive) (NN endorsement)) (PP (IN of) (NP (BASENP (DT the) (JJ harshest) (NN interrogation) (NNS techniques)) (VP (ADVP (RB ever)) (VP (VBN used) (PP (IN by) (BASENP (DT the) (NNP Central) (NNP Intelligence) (NNP Agency)))))))) (COMMA ,)) (DQR ''))) (CC and) (VP (ADVP (RB explicitly)) (VP (VBD authorized) (NP (NP (BASENP (DT the) (NN use)) (PP (IN of) (NP (BASENP (NNS tactics)) (PP (VBG including) (NP (NP (BASENP (NN head-slapping)) (COMMA ,) (BASENP (JJ frigid) (NNS temperatures))) (CONJP (COMMA ,) (CC and)) (NP (BASENP (DT the) (JJ simulated) (NN drowning) (NN technique)) (VP (VBN known) (PP (IN as) (BASENP (NN waterboarding)))))))))) (PP (IN against) (BASENP (NN terror) (NNS suspects))))))))) (PERIOD .))