Bin Ladin apparently kept his options open, maintaining contacts with Gulbuddin Hekmatyar, who, though an Islamic extremist, was also one of the Taliban's most militant opponents.
( ( Bin Ladin ) ( apparently ( ( ( ( kept ( ( his options ) open ) ) , ) ( ( maintaining contacts ) ( with ( ( ( Gulbuddin Hekmatyar ) , ) ( who ( , ( ( though ( an ( Islamic extremist ) ) ) ( , ( ( was also ) ( one ( of ( ( the ( Taliban 's ) ) ( most ( militant opponents ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Bin) (NNP Ladin)) (ADVP (RB apparently)) (VP (VBD kept) (S (NP (PRP$ his) (NNS options)) (ADJP (JJ open))) (, ,) (S (VP (VBG maintaining) (NP (NNS contacts)) (PP (IN with) (NP (NP (NNP Gulbuddin) (NNP Hekmatyar)) (, ,) (SBAR (WHNP (WP who)) (S (, ,) (PP (IN though) (NP (DT an) (JJ Islamic) (NN extremist))) (, ,) (VP (VBD was) (ADVP (RB also)) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (NNP Taliban) (POS 's)) (JJS most) (JJ militant) (NNS opponents)))))))))))) (. .)))
Bin Ladin kept his options open by keeping in contact with Gulbuddin Hekmatyar.
( ( Bin Ladin ) ( ( kept ( ( his options ) ( open ( by ( ( keeping ( in contact ) ) ( with ( Gulbuddin Hekmatyar ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Bin) (NNP Ladin)) (VP (VBD kept) (S (NP (PRP$ his) (NNS options)) (ADJP (JJ open) (PP (IN by) (S (VP (VBG keeping) (PP (IN in) (NP (NN contact))) (PP (IN with) (NP (NNP Gulbuddin) (NNP Hekmatyar))))))))) (. .)))