They said the hijackers wielded knives and claimed to have a bomb.
( They ( ( said ( ( the hijackers ) ( ( ( wielded knives ) and ) ( claimed ( to ( have ( a bomb ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD said) (SBAR (S (NP (DT the) (NNS hijackers)) (VP (VP (VBD wielded) (NP (NNS knives))) (CC and) (VP (VBD claimed) (S (VP (TO to) (VP (VB have) (NP (DT a) (NN bomb)))))))))) (. .)))
The highjackers had knives and claimed to have bombs. 
( ( The highjackers ) ( ( ( ( had knives ) and ) ( claimed ( to ( have bombs ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS highjackers)) (VP (VP (VBD had) (NP (NNS knives))) (CC and) (VP (VBD claimed) (S (VP (TO to) (VP (VB have) (NP (NNS bombs))))))) (. .)))