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For each concept contained by a codeSystem, the loader will create a LexGrid Entity (A5) and a "hasSubtype" association (A4) with respective LexGrid Entity (A3) representing the codeSystem.  The LexGrid Entity representing a concept will have its entityCode value comprised of the code attribute of the code element of the concept and the value of the conceptProperty element of the concept where the conceptProperty type is defined as the internal identifier type ("internalId").  These two values are concatenated with the colon (":") character as depicted by the value "A:19960" under A5. 

Concepts having concept relationships with other concepts will be created by the loader such the association's name (or association predicate) will be the relationshipName attribute of the conceptRelationship element in the load source file.  NOTE:  these associations associations between concepts are not depicted in the above image.  

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