(S (S (ADVP (RB Later)) (COMMA ,) (S (BASENP (NNP Discovery)) (VP (VBD became) (NP (BASENP (DT the) (JJ first) (NN shuttle)) (SBAR (S (VP (TO to) (VP (VB fly) (BASENP (DT a) (JJ Russian) (NN cosmonaut)))))))))) (PERIOD .))