]> PROTON (Proto Ontology), System module "0.1" Any sort of an entity of interest, usually something existing, happening, or purely abstract. Entities may have several - more than one - names or aliases. An alias of a named entity, usually not a general term but rather a name of something. Specific names, such as John and Smith, are not aliased on themselves. However, "John Smith" and "Mr. Smith" could be. T A textual description of an entity. Usually a free text in some natural language. As defined in DC2003ISO for InformationResources. In a sense, it is a specializatoin of rdf:comment The official (or otherwise most important) alias of the entity An extremely short (typiaclly, single sentence) description of an entity Makes possible the modelling of a specific, but rather useful modelling pattern. The semantics is defined with the following axiom: (p,transitiveOver,q) (x,p,y) (y,q,z) => (x,p,z). Sample usage is: (locatedIn, transitiveOver, subRegionOf) (Ontotext,locatedIn,Bulgaria) (Bulgaria,subRegionOf,Europe) => (Ontotext,locatedIn,Europe). The intended domain and range of this property are owl:ObjectProperty; those are not formally specified, in order not to get the ontology outside the OWL DL segment. A lexical resource of any sort, usually part of a natural language or a specialized vocabulary. The rdf:label property defines the character string constituting the resource. T The system classes and properties are used to encode system specific information. Those, as well as their instances and related information, should usually not be presented to the end-user. In practice, user-interface and visualization modules, can filter such primitives. All the system primitives should be marked with this property with string value "T". A particular source where the entity (description) is derived/imported/extracted from. Can be used for maintenance of knowledge bases where information from multiple sources is being imported. T To identify a source (like a program or a module), which is capable of recognizing and generating new entities. Typically, those are not checked, and thus not trustable. An example for this is the NE-recognition process in KIM/GATE. T Used to indicate entities, imported from reliable (trusted) sources, like GNS, World Fact Book, GATE/MUSE/KIM gazetteers, but also any other trusted source. T T