(S (S (PP (IN At) (NP (BASENP (DT the) (NNP United) (NNPS Nations) (NNP Climate) (NNP Change) (NNP Conference)) (PP (IN in) (BASENP (NNP Copenhagen))))) (COMMA ,) (S (PP (IN after) (NP (BASENP (NN four) (NNS days)) (PP (IN of) (BASENP (NNS negotiations))))) (COMMA ,) (S (BASENP (NNP Africa) (NNS countries)) (VP (VBP have) (VP (VBN made) (NP (NP (BASENP (DT the) (JJ first) (NN draft) (NN version)) (PP (IN of) (NP (JJ future) (BASENP (JJ possible) (NN treaty))))) (COMMA ,) (SBAR (S (VP (TO to) (VP (VB replace) (BASENP (DT the) (NN 1997) (NNP Kyoto) (NN protocol)))))))))))) (PERIOD .))