(S (S (BASENP (PRP They)) (VP (ADVP (RB also)) (VP (VP (VBD refused) (BASENP (NN today))) (S (VP (TO to) (VP (VB approve) (NP (BASENP (DT a) (JJ new) (NN treaty)) (VP (VBN designed) (S (VP (TO to) (VP (VP (VP (VB cut) (BASENP (NNS emissions))) (PP (IN by) (NP (BASENP (NN 25) (NN percent)) (PP (TO to) (BASENP (NN 40) (NN percent)))))) (PP (IN by) (BASENP (NN 2020)))))))))))))) (PERIOD .))