(S (S (BASENP (DT The) (JJ second) (NN event)) (VP (VBD occurred) (PP (IN on) (NP (NP (BASENP (NNP November) (NN 26)) (COMMA ,) (BASENP (NN 2008))) (COMMA ,) (SBAR (WHADVP (WRB when)) (S (BASENP (DT a) (NNP Delta) (NNP Air) (NNPS Lines) (NNP Boeing) (NNP 777)) (VP (VP (VP (VBD experienced) (BASENP (DT a) (JJ single) (NN engine) (NN rollback))) (PP (IN during) (NP (BASENP (NN cruise) (NN flight)) (PP (IN over) (NP (BASENP (NNP Montana)) (COMMA ,) (BASENP (NNP United) (NNPS States))))))) (PP (IN while) (ADVP (ADVP (ADVP (FW en) (FW route)) (PP (IN from) (BASENP (NNP Shanghai)))) (PP (TO to) (BASENP (NNP Atlanta)))))))))))) (PERIOD .))