(S (S (S (NP (BASENP (NN 75) (NNS people)) (PRN (COMMA ,) (NP (ADVP (RB mainly)) (BASENP (NNS women) (CC and) (NNS children))) (COMMA ,))) (VP (VBD were) (PP (IN aboard) (BASENP (DT the) (NN vessel))))) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP it)) (VP (VP (VBD flipped) (PRT (RP over))) (PP (IN during) (BASENP (DT a) (NN storm))))))) (PERIOD .))