1. A computer-implemented method involving a corpus of documents, said method comprising: accepting search criteria from a user, said search criteria including a domain identifier identifying a domain and including a filter condition specifying a geometric relationship between co-referenced locations; in response to accepting said search criteria from the user, searching among the corpus of documents to identify a set of documents, wherein each document among the set of documents contains anywhere within the document location-related information that refers to a location within the domain and satisfies the filter condition, and wherein the set of documents only includes documents that satisfy the filter condition; and identifying to the user the documents in the set of documents.