(S (S (PP (IN In) (BASENP (JJ late) (NN 2006))) (S (BASENP (NNS authorities)) (VP (VP (VBD launched) (NP (BASENP (DT a) (NN crackdown)) (PP (IN on) (BASENP (JJ Mexican) (NNS drugs) (NNS cartels))))) (COMMA ,) (PP (IN with) (S (BASENP (NNP Ciudad) (NNP Juarez)) (VP (VP (VBG receiving) (BASENP (NN 45,000) (NNS troops))) (PP (IN during) (BASENP (DT that) (NN time))))))))) (PERIOD .))