(S (S (S (BASENP (PRP It)) (VP (VBZ is) (VP (VBN designed) (S (VP (TO to) (VP (VP (VB simulate) (BASENP (DT the) (NNS conditions))) (PP (ADVP (RB shortly)) (PP (IN after) (BASENP (DT the) (NNP Big) (NNP Bang)))))))))) (CONJP (COMMA ,) (CC but)) (S (BASENP (PRP it)) (VP (VP (VP (VBD broke) (PRT (RP down))) (PP (IN on) (BASENP (NNP September) (NN 19)))) (PP (JJ due) (PP (TO to) (BASENP (DT an) (JJ electrical) (NN failure))))))) (PERIOD .))