(S (S (BASENP (PRP He)) (VP (ADVP (RB also)) (VP (VBD said) (SBAR (S (BASENP (NNS authorities)) (VP (VBP believe) (SBAR (S (BASENP (DT the) (NNS women)) (VP (VBD were) (ADJP (JJ unaware) (PP (IN of) (NP (NNS plans) (SBAR (S (VP (TO to) (VP (VB detonate) (BASENP (DT the) (NNS explosives)))))))))))))))))) (PERIOD .))