(S (S (BASENP (JJ Polish) (NNS forces)) (VP (VP (VBD joined) (BASENP (NNP NATO))) (PP (IN in) (NP (NP (BASENP (PRPD their) (NN fight)) (PP (IN with) (BASENP (DT the) (NNP Taliban)))) (PP (IN in) (BASENP (NNP March) (NN 2002))))))) (PERIOD .))