(S (S (BASENP (DT The) (NN agency)) (VP (VBZ has) (VP (VP (VP (VBN submitted) (BASENP (DT a) (NN proposal))) (PP (TO to) (BASENP (DT the) (NNP Obama) (NN administration)))) (SBAR (WHNP (WDT which)) (S (VP (VBZ aims) (S (VP (TO to) (VP (VP (VP (VB list) (NP (BASENP (NN carbon) (NN dioxide)) (CC and) (BASENP (JJ other) (NN greenhouse) (NNS gasses)))) (PP (IN as) (BASENP (NNS pollutants)))) (PP (IN under) (BASENP (DT the) (JJ Clean) (NN Air) (NN Act)))))))))))) (PERIOD .))