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AI Magazine 

These tools can be used for a great range of activities in the ontology development process, such as ontology design, browsing and implementation, ontology importation, ontology merge and alignment, and ontology-based resource annotation. The middle tier is based on an application server, which makes it easy to create and add new services. A wide range of services for importing and exporting ontologies are available, as we describe in the next section, and some other services rely on them. WAB) to edit formal axioms and rules. Bibliographic references, synonyms, and acronyms can be attached to any of the aforementioned ontology components.