| An organized structure for arranging and classifying. In formal terms, a plan might be considered to be composed of one or more PlanElements. However, we also want to allow for less formal notions of plan. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Endurant |
| •NonPhysicalEndurant |
| •SocialObject |
| •NonAgentiveSocialObject |
| •Concept |
| •Course |
| •Plan |