(S (S (BASENP (NNP Prime) (NNP Minister) (NNP Stephen) (NNP Harper)) (VP (VP (VBD urged) (BASENP (NNPS Canadians))) (S (VP (TO to) (VP (VP (VB pay) (BASENP (NN tribute))) (PP (TO to) (NP (NP (DT the) (NP (BASENP (NNS soldiers)) (CC and) (BASENP (NN aid) (NNS workers)))) (PP (IN in) (BASENP (NNP Afghanistan)))))))))) (PERIOD .))