(S (S (BASENP (PRP It)) (VP (MD could) (VP (ADVP (RB eventually)) (VP (VB be) (VP (VBN used) (PP (IN for) (NP (BASENP (JJ manned) (NNS missions)) (VP (VBG using) (BASENP (DT the) (NNP SpaceX) (NNP Dragon) (NN spacecraft)))))))))) (PERIOD .))