(S (S (PP (IN After) (NP (BASENP (DT an) (NN introduction)) (PP (IN from) (NP (BASENP (NNP Virginia) (NN governor) (NNP Bob) (NNP McDonnell)) (COMMA ,) (SBAR (WHNP (WP who)) (S (BASENP (PRP himself)) (VP (VBD had) (VP (VBN been) (VP (VBN considered) (NP (DT a) (NP (JJ potential) (BASENP (JJ running) (NN mate))))))))))))) (COMMA ,) (S (BASENP (NNP Romney)) (VP (ADVP (RB officially)) (VP (VBD made) (BASENP (DT the) (NN announcement)))))) (PERIOD .))