(S (S (BASENP (PRP It)) (VP (VP (VP (VBD was) (ADVP (RB also))) (NP (BASENP (DT the) (JJ first) (NN shuttle)) (SBAR (S (VP (TO to) (VP (VB fly) (PP (IN after) (BASENP (DT the) (NNP Challenger) (NN disaster))))))))) (CC and) (VP (VBD was) (NP (BASENP (DT the) (JJ first) (NN shuttle)) (SBAR (S (VP (TO to) (VP (VB fly) (PP (IN after) (BASENP (DT the) (NNP Space) (NNP Shuttle) (NNP Columbia) (NN disaster))))))))))) (PERIOD .))