(S (S (PP (IN During) (NP (BASENP (DT a) (NN press) (NN conference)) (BASENP (NN yesterday)))) (COMMA ,) (S (BASENP (NNP United) (NNPS States) (NN military) (CC and) (NN intelligence) (NNS officials)) (VP (VBD presented) (NP (BASENP (NN material)) (SBAR (S (BASENP (PRP they)) (VP (VBP say) (SBAR (S (VP (VP (VBP link) (NP (BASENP (NNS weapons)) (VP (VBN used) (PP (IN by) (BASENP (NNP Iraq) (NNS fighters)))))) (PP (TO to) (BASENP (NNP Iran))))))))))))) (PERIOD .))