| E41-CIDOC - This class comprises all proper names, words, phrases or codes, either meaningful or not, that are used or can be used to identify a specific instance of some class within a certain context. Instances of E41 Appellation do not identify objects by their meaning but by convention, tradition or agreement. From an implementation point of view, the class E41 Appellation is unlike most others, whose instances in a database can be considered as surrogates or references to real-world entities, in that each instance is nothing other than the E41 Appellation itself, i.e. the instance of E41 Appellation 'Martin' is nothing other than the name 'Martin' which should not be confused with any instance of E21 Person or persons called Martin.
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