The would-be killers, who came from the Egyptian Islamic Group, had been sheltered in Sudan and helped by Bin Ladin.
( ( ( ( ( The ( would-be killers ) ) , ) ( who ( came ( from ( the ( Egyptian ( Islamic Group ) ) ) ) ) ) ) , ) ( ( had ( been ( ( ( sheltered ( in Sudan ) ) and ) ( helped ( by ( Bin Ladin ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ would-be) (NNS killers)) (, ,) (SBAR (WHNP (WP who)) (S (VP (VBD came) (PP (IN from) (NP (DT the) (JJ Egyptian) (NNP Islamic) (NNP Group)))))) (, ,)) (VP (VBD had) (VP (VBN been) (VP (VP (VBN sheltered) (PP (IN in) (NP (NNP Sudan)))) (CC and) (VP (VBN helped) (PP (IN by) (NP (NNP Bin) (NNP Ladin))))))) (. .)))
The Egyptian Islamic Group was slightly less extreme than Bin Ladin.
( ( The ( Egyptian ( Islamic Group ) ) ) ( ( ( was ( slightly ( less extreme ) ) ) ( than ( Bin Ladin ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ Egyptian) (NNP Islamic) (NNP Group)) (VP (VBD was) (ADJP (RB slightly) (RBR less) (JJ extreme)) (PP (IN than) (NP (NNP Bin) (NNP Ladin)))) (. .)))