(S (S (BASENP (DT A) (JJ sixth) (NN member)) (VP (VP (VBD was) (VP (VBN arrested) (PP (IN for) (S (VP (VBG aiding) (CC and) (VBG abetting)))))) (CC but) (VP (VBD was) (VP (VBN released) (PP (IN without) (BASENP (NN charge))))))) (PERIOD .))