or may in the future retain the Senior Adviser. "D. E. Shaw Group' means, collectively: (a) D. E. Shaw & Co., L.P. and D. E. Shaw & Co., LLC.; (b) D. E. Shaw & Co., Inc. and D. E. Shaw & Co.!!, Inc. (the general partner and managing member, respectively, of the foregoing); (c) any entity, mast, or unincorporate