(S (S (BASENP (NNS Police)) (VP (VP (VP (VBD launched) (BASENP (NNS raids))) (COMMA ,) (S (VP (VBG rescuing) (BASENP (DT the) (NNS women))))) (PP (IN after) (S (VP (VBG receiving) (BASENP (DT a) (NN tip-off))))))) (PERIOD .))