See United States v. Causby , 328 U.S. 256, 268 (1946) (“Since [the terms of the property interests acquired are] not clear…, it would be premature for us to consider whether the amount of the award…was proper.”); United States v. 21.54 Acres of Land in Marshall Cty. , 491 F.2d 301, 305 (4th Cir. 1973) (discrepancies in legal description of easement boundaries required determination “whether the government has, in fact, accurately described the land in which it intends to take easements”).