(S (S (S (BASENP (DT The) (JJ first) (NN stage)) (VP (VBD was) (ADJP (ADVP (RB completely)) (JJ successful)))) (COMMA ,) (SBAR (IN although) (S (NP (EX there)) (VP (VBD appeared) (S (VP (TO to) (VP (VP (VB be) (BASENP (DT some) (NNS problems))) (PP (IN with) (BASENP (DT the) (JJ second) (NN stage)))))))))) (PERIOD .))