(S (S (PP (VBG According) (PP (TO to) (BASENP (PRP him)))) (COMMA ,) (S (NP (BASENP (DT the) (NN attacker) (POS 's)) (NN vehicle)) (VP (VBD contained) (NP (BASENP (NN 250) (NNS kilograms)) (PP (IN of) (BASENP (ADJP (RB highly) (JJ intensive)) (JJ explosive) (NN material))))))) (PERIOD .))