(S (S (PP (IN At) (BASENP (DT the) (NN time))) (S (BASENP (NNP Mr) (NNP Vaile)) (VP (VP (VBD defended) (BASENP (NNP AWB))) (PP (VBN based) (PP (IN upon) (NP (BASENP (NN information)) (VP (VP (VBN provided) (PP (TO to) (BASENP (PRP him)))) (PP (IN by) (BASENP (PRPD his) (NN department)))))))))) (PERIOD .))