Nevertheless, they constituted a potential resource for al Qaeda.
( Nevertheless ( , ( they ( ( ( constituted ( a ( potential resource ) ) ) ( for ( al Qaeda ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Nevertheless)) (, ,) (NP (PRP they)) (VP (VBD constituted) (NP (DT a) (JJ potential) (NN resource)) (PP (IN for) (NP (NNP al) (NNP Qaeda)))) (. .)))
The possibility remained that were were a resource to be used by al Qaeda.
( ( The possibility ) ( ( remained ( that ( were ( were ( a ( resource ( to ( be ( used ( by ( al Qaeda ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN possibility)) (VP (VBD remained) (SBAR (IN that) (S (VP (VBD were) (VP (VBD were) (NP (DT a) (NN resource) (S (VP (TO to) (VP (VB be) (VP (VBN used) (PP (IN by) (NP (NNP al) (NNP Qaeda))))))))))))) (. .)))