(S (S (BASENP (NNS Authorities)) (VP (VBP say) (SBAR (S (S (BASENP (DT the) (NN accident)) (VP (VBD occurred))) (SBAR (WHADVP (WRB when)) (S (BASENP (NNP Winner)) (VP (VP (VBD drove) (BASENP (PRPD his) (NN SUV))) (PP (IN into) (BASENP (JJ oncoming) (NN traffic)))))))))) (PERIOD .))