Buyer entered a contract with Seller for the purchase of real estate. In the county records, the land in question is divided into two lots - Parcel 1 and Parcel 2. When the transaction closed, the Seller signed the deed conveying the property believing that she was selling only Parcel 1. She later discovers, however, that the legal description attached to the deed covered both Parcel 1 and Parcel 2. Seller then sues Buyer claiming that the legal description was changed after she signed the deed. This situation is most analogous to which of the following scenarios?