(S (S (S (BASENP (NNS Hopper)) (VP (VBD was) (ADJP (JJ unable) (S (VP (TO to) (VP (VP (VB build) (PP (IN on) (BASENP (DT this) (NN success)))) (PP (IN for) (BASENP (JJ several) (NNS years))))))))) (COMMA ,) (SBAR (IN until) (S (NP (BASENP (DT a) (JJ featured) (NN role)) (PP (IN in) (NP (NP (BASENP (NNP Apocalypse)) (ADVP (RB Now))) (PRN (LRB -LRB-) (BASENP (NN 1979)) (RRB -RRB-))))) (VP (VP (VBD brought) (BASENP (PRP him))) (BASENP (NN attention)))))) (PERIOD .))