premise: He died in a ferryboat accident on Lake Victoria just a few days after Bin Ladin arrived in Jalalabad , leaving Bin Ladin with a need to replace him not only in the Shura but also as supervisor of the cells and prospective operations in East Africa and true is true and true is true and true is true and true is true and true is true .
hypothesis: After his untimely death , Bin Ladin was forced to replace his roles in the Shura and in supervising cells in East Africa .