(S (S (S (BASENP (DT A) (JJ subsequent) (JJ internal) (NNP RCMP) (NN investigation)) (VP (VBD found) (NP (NP (NP (BASENP (JJ several) (NNS instances)) (PP (IN of) (BASENP (NN impropriety)))) (PP (IN in) (BASENP (DT the) (NNP Arar) (NN case)))) (COMMA ,) (PP (VBG including) (NP (NP (BASENP (DT the) (NN provision)) (PP (IN of) (NP (BASENP (JJ sensitive) (NN information)) (PP (IN on) (BASENP (NNP Arar)))))) (PP (TO to) (BASENP (NNP US) (NNS officials)))))))) (CONJP (COMMA ,) (CC and)) (SBAR (IN that) (S (BASENP (DT a) (NN liaison) (NN officer)) (VP (VP (MD may) (VP (VB have) (VP (VBN known) (PP (IN of) (BASENP (DT the) (NN deportation) (NN plan)))))) (CC but) (VP (VP (VBD did) (RB not)) (VP (VB contact) (BASENP (PRPD his) (NNS supervisors)))))))) (PERIOD .))