Table 2.
Vocabulary of the domain ontology
| Term | DL category | Use in modelling | Condition |
|---|---|---|---|
| Situation | Concept | Partial static description of the world | axiom 1 |
| Event | Concept | Asynchronous activity | axiom 1 |
| Entity | Concept | Qualitative descriptor | axiom 1 |
| Action | Role | Synchronous activity | axiom 2 |
 |
Role | Event occurrence | axiom 4 |
 |
Role | Situation description | axiom 6 |
 |
Role | Event description | axiom 5 |
| describe | Role | Describing entities and specifying dependencies | axiom 7 |
| chain | Role | Connecting events causally | axiom 3 |