(S (S (BASENP (PRP They)) (VP (VP (VBP have) (VP (VBN withdrawn) (BASENP (PRPD their) (NN ambassador)))) (CC and) (VP (VBP have) (VP (VBN decided) (S (VP (TO to) (VP (VB cancel) (NP (NP (BASENP (NNS plans)) (PP (IN with) (BASENP (DT the) (JJ Cambodian) (NN government)))) (PP (IN for) (NP (BASENP (NN trade)) (CC and) (BASENP (NN oil) (NN exploration)))))))))))) (PERIOD .))