(S (S (NP (NP (BASENP (DT A) (NN sprinter)) (PP (IN since) (BASENP (NN childhood)))) (COMMA ,) (BASENP (NNP McNeil))) (VP (VBD competed) (PP (IN at) (BASENP (NN two) (NNP Olympic) (NNPS Games))))) (PERIOD .))