(S (S (SBAR (RB Even) (SBAR (IN before) (S (BASENP (DT the) (VBN taped) (NN show)) (VP (VBD was) (VP (VBN aired)))))) (COMMA ,) (S (BASENP (NNP Barack) (NNP Obama)) (VP (VP (VBD called) (NP (BASENP (DT the) (NN chairman)) (PP (IN of) (BASENP (DT the) (NNP Special) (NNPS Olympics))))) (S (VP (TO to) (VP (VB apologize))))))) (PERIOD .))