(S (S (PP (IN On) (BASENP (DT that) (NN date))) (COMMA ,) (S (BASENP (NNP Peru)) (VP (VP (VBD became) (NP (BASENP (DT the) (JJ 40th) (NN country)) (SBAR (S (VP (TO to) (VP (VB ratify) (NP (BASENP (DT an) (JJ international) (NN treaty)) (S (VP (TO to) (VP (VB reduce) (BASENP (NN smoking)))))))))))) (COMMA ,) (S (VP (ADVP (RB thus)) (VP (VBG triggering) (NP (NP (BASENP (NN activation)) (PP (IN of) (BASENP (DT the) (NN treaty)))) (PP (IN in) (BASENP (NN 90) (NNS days)))))))))) (PERIOD .))