1. A method, in a data processing system comprising a processor and a memory, for generating a lexical resource for linguistic analysis, the method comprising: receiving, by the data processing system, a document data structure comprising a renaming directive in natural language textual content of the document data structure, wherein the renaming directive is a statement that specifies a correspondence between a full expression and a moniker that is stand-in text for the full expression; applying, by the data processing system, filter logic to the document data structure to identify the renaming directive within the natural language textual content of the document data structure; analyzing, by the data processing system, the renaming directive to identify a relationship between semantic concepts represented by the renaming directive that are to be used to update a lexical resource based on the renaming directive; updating, by the data processing system, the lexical resource based on results of analyzing the renaming directive; and outputting, by the data processing system, the updated lexical resource to a linguistic analysis system, wherein the linguistic analysis system performs linguistic analysis of a portion of textual content based on the updated lexical resource.