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tological class Swimlane as range. Finally, we define the property ???isMadeOfLane???
to state that each Pool (class Pool.is the domain of this property) may contain one
or more Lane (range of property).
Starting from previous consideration the core classes and main relationship of the
ontology metamodel are represented in Figure 6.
Some special cases have been faced during the development of the BPMN ontology
metamodel.
A Pool, following BPMN specification, may contain both a Lane and a Generic-
BusinessProcessObject (different from Swimlane) (Figure7). The problem is how
to model this concept: make two different Object Properties or the same? The best
solution, following the ontology idea, is to provide the same Object Property because
the semantics of the relationship are the same. We define the Object Property
???belongsToPool??? with only one class as range (the ontological class Pool) and the
domain as the union of the other classes: Flow Object, Artifact, and Connecting
Object.
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