1. A method, in a data processing system comprising a processor and a memory having instructions which, when executed by the processor, cause the processor to configure the data processing system to implement a context aware abbreviation detection and annotation (CAADA) system, the method comprising: identifying, by the CAADA system, in received content, an instance of a full name of an entity; performing, by the CAADA system, analysis of a context window associated with the instance of the full name of the entity to identify a presence of a pattern of content representative of an abbreviation; identifying, by the CAADA system, an abbreviation being present in association with the instance of the full name of the entity based on results of the analysis of the context window; generating, by the CAADA system, a mapping data structure that maps the full name of the entity to the abbreviation; annotating, by the CAADA system, the received content based on the mapping data structure to thereby generate abbreviation annotations for the received content; and outputting, by the CAADA system, the annotated received content for use by a cognitive system to perform a cognitive operation based on the annotated received content.