(S (S (SBAR (WHADVP (WRB Though)) (S (NP (BASENP (DT the) (JJ exact) (NN reason)) (PP (IN for) (NP (BASENP (NNP Morris) (POS ')) (BASENP (NN visa) (NN denial))))) (VP (VBZ is) (ADJP (JJ unclear))))) (COMMA ,) (S (SBAR (WHADVP (WRB when)) (S (BASENP (NNP Morris)) (VP (VBD went) (ADJP (JJ on-site) (S (VP (TO to) (VP (VB cover) (NP (NP (BASENP (DT the) (NN release)) (PP (IN of) (NP (BASENP (NN four) (JJ Colombian) (NN security) (NN force) (NNS members) (POS ')) (NN release)))) (PP (IN by) (BASENP (NNP FARC) (NNS rebels))))))))))) (COMMA ,) (S (BASENP (NNP Uribe)) (VP (VBD called) (S (BASENP (DT the) (NN journalist)) (QT (DQL ``) (NP (BASENP (DT an) (NN accomplice)) (PP (IN of) (BASENP (NN terrorism)))) (DQR ''))))))) (PERIOD .))