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TBox statements tend to be more permanent within a knowledge base and are used and stored as a schema or a data model. In contrast, ABox statements are much more dynamic in nature and tend to be stored as instance data within transactional systems within databases. With the newer,
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ABox statements typically deal with concrete entities. They specify what category an entity belongs to, or what relation one entity has to another entity.
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TBox statements are sometimes associated with object-oriented classes and ABox statements associated with instances of those classes.
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ABox statements must be TBox-compliant: they are assertions that use the vocabulary defined by the TBox.
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place A contains place B if place B is-located-in A.
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