Abu Bara al Yemeni
According to the 9-11 Commission Report , Abu Bara al Yemeni was a citizen of Yemen who was slated to participate in al Qaeda's attacks on the United States on September 11 , 2001 . 
<triplet> Abu Bara al Yemeni <subj> Yemen <obj> country of citizenship <triplet> United States <subj> September 11, 2001 <obj> significant event <triplet> September 11, 2001 <subj> al Qaeda <obj> participant <subj> September 11, 2001 <obj> point in time