Blue-colored phrases are candidates for callouts. Also, a couple of phrases in the beginning of the article are shown in larger font on purpose (as lead-in). The heart of ontologies and the quintessence of software patterns Ontologies allow us to relate things by virtue of the relations between their constituents [Lenat, 1995] . Things, objects and concepts have their meanings, goals, functions, functionalities, components, structure, and other characteristics. In most of cases ontologies have

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... he form of networks of categories/classes of concepts, with an explicit representation of hierarchy/inheritance among them. Along with these abstraction hierarchies, an ontology represents the vocabulary of the problem domain, different kinds of relationships between its