(S (S (BASENP (NNP CBI) (NNS investigations)) (VP (ADVP (RB also)) (VP (VBD revealed) (SBAR (IN that) (S (S (BASENP (NNP Surve)) (VP (VBD had) (VP (VP (VBN concealed) (NP (BASENP (NN 59) (NNS bags)) (PP (IN of) (BASENP (NNS explosives))))) (PP (IN in) (BASENP (PRPD his) (NN field)))))) (COMMA ,) (SBAR (IN before) (S (VP (VP (VP (VBG handing) (BASENP (PRP them))) (PRT (RP over))) (PP (TO to) (BASENP (DT the) (NNS bombers))))))))))) (PERIOD .))