(S (S (BASENP (NNP Hurricane) (NNP Andrew)) (VP (VBD was) (NP (BASENP (DT a) (JJ catastrophic) (NNP Category) (NN 5) (NN storm)) (SBAR (WHNP (WDT that)) (S (VP (VBD came) (PP (IN during) (NP (BASENP (DT a) (NN year)) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP it)) (VP (VBD was) (BASENP (DT a) (JJ lower-than-average) (NN season))))))))))))) (PERIOD .))