(S (S (BASENP (NNS Police)) (VP (ADVP (RB also)) (VP (VBP say) (SBAR (IN that) (S (S (NP (BASENP (QP (ADVP (IN at) (JJS least)) (NN one))) (PP (IN of) (NP (BASENP (NNS cars)) (VP (VBG following) (NP (BASENP (NNP Spears)) (PRN (COMMA ,) (SBAR (WHNP (WP who)) (S (VP (VBD was) (VP (VBG driving) (BASENP (PRPD her) (NN car)))))) (COMMA ,))))))) (VP (VBD tried) (S (VP (TO to) (VP (VP (VB run) (BASENP (PRP her))) (PP (IN off) (BASENP (DT the) (NN road)))))))) (CONJP (COMMA ,) (CC but)) (S (BASENP (PRP she)) (VP (VP (VBD was) (RB not)) (ADJP (JJ able) (S (VP (TO to) (VP (VB identify) (NP (BASENP (DT the) (NN vehicle)) (CC or) (BASENP (DT the) (NNS occupants)))))))))))))) (PERIOD .))