(S (S (BASENP (NNP World) (NNP Heath) (NNP Organization) (NNS rules)) (VP (VBP make) (S (BASENP (NNP New) (NNP Zealand)) (VP (VBN obliged) (S (VP (TO to) (VP (VB increase) (NP (BASENP (DT the) (NN warning) (NNS sizes)) (PP (IN on) (BASENP (NNS packets))))))))))) (PERIOD .))