nes of relevancy and to explore matter which does not presently appear germane on the theory that it might conceivably become so.'" Food Lion, Inc. I. United Food & Commercial Workers Intern. Union, 103 F.3d 1007, 1012-13 (C.A. D.C. 1997)(quoting Broadway and Ninety Sixth Street Realty Cot Loew's Inc., 21 F.R.D. 347, 352 (S.D. N.Y. 1958