Bin Ladin's grievance with the United States may have started in reaction to specific U.S. policies but it quickly became far deeper.
( ( ( ( ( ( ( Bin ( Ladin 's ) ) grievance ) ( with ( the ( United States ) ) ) ) ( may ( have ( ( started ( in reaction ) ) ( to ( specific ( U.S. policies ) ) ) ) ) ) ) but ) ( it ( quickly ( became ( far deeper ) ) ) ) ) . )
(ROOT (S (S (NP (NP (NP (NNP Bin) (NNP Ladin) (POS 's)) (NN grievance)) (PP (IN with) (NP (DT the) (NNP United) (NNPS States)))) (VP (MD may) (VP (VB have) (VP (VBN started) (PP (IN in) (NP (NN reaction))) (PP (TO to) (NP (JJ specific) (NNP U.S.) (NNS policies))))))) (CC but) (S (NP (PRP it)) (ADVP (RB quickly)) (VP (VBD became) (ADJP (RB far) (JJR deeper)))) (. .)))
Bin Ladin had grievances with the United States starting with U.S. foreign policy.
( ( Bin Ladin ) ( ( ( had ( grievances ( with ( the ( United States ) ) ) ) ) ( starting ( with ( U.S. ( foreign policy ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Bin) (NNP Ladin)) (VP (VBD had) (NP (NP (NNS grievances)) (PP (IN with) (NP (DT the) (NNP United) (NNPS States)))) (PP (VBG starting) (PP (IN with) (NP (NNP U.S.) (JJ foreign) (NN policy))))) (. .)))