(S (S (NP (BASENP (DT The) (JJ international) (NN legislation)) (SBAR (S (BASENP (PRP he)) (VP (VBD was) (VP (VBG referring) (PP (TO to))))))) (VP (VP (VBZ is) (ADVP (RB probably))) (NP (NP (BASENP (DT the) (NN Convention)) (PP (IN on) (BASENP (JJ International) (JJ Civil) (NN Aviation)))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ stipulates) (SBAR (IN that) (S (NP (BASENP (NN accident) (NNS reports)) (CC and) (NP (BASENP (JJ related) (NN material)) (PRN (COMMA ,) (NP (ADVP (RB specifically)) (NP (NP (NP (BASENP (NNS transcripts)) (PP (IN of) (BASENP (NNS interviews)))) (COMMA ,) (NP (BASENP (NNS communications)) (PP (IN with) (BASENP (NNS crew))))) (CC and) (NP (NP (NP (BASENP (NN cockpit) (NN voice) (NN recorder)) (CC and) (BASENP (NN flight) (NN data) (NN recorder))) (PRN (LRB -LRB-) (VP (ADVP (RB collectively)) (VP (VBN known) (PP (IN as) (BASENP (JJ black) (NNS boxes))))) (RRB -RRB-))) (NNS readouts)))) (COMMA ,)))) (VP (VP (MD must) (RB not)) (VP (VB be) (VP (VBN used) (PP (IN for) (NP (BASENP (DT any) (NN purpose)) (PP (JJ other) (PP (IN than) (S (VP (VBG determining) (NP (BASENP (DT the) (NN cause)) (PP (IN of) (BASENP (DT an) (NN accident) (CC or) (NN incident))))))))))))))))))))) (PERIOD .))