Deductions
- 1989 South African presidential election has quality class ⇐ (abstract entity is a class), (1989 South African presidential election has quality abstract entity)
- 1989 South African presidential election has quality entity ⇐ (type is a entity), (1989 South African presidential election has quality type)
- 1989 South African presidential election has quality abstract entity ⇐ (metaclass is subclass of abstract entity), (1989 South African presidential election has quality metaclass)
- event is for example 1989 South African presidential election ⇐ (1989 South African presidential election is a event), (is a is inverse of is for example)
- entity is for example 1989 South African presidential election ⇐ (1989 South African presidential election is a entity), (is a is inverse of is for example)
- 1989 South African presidential election has quality temporal entity ⇐ (1989 South African presidential election is a event), (event has quality temporal entity)
- 1989 South African presidential election has quality metaclass ⇐ (1989 South African presidential election is a event), (event has quality metaclass)
- 1989 South African presidential election has quality spatio-temporal entity ⇐ (1989 South African presidential election is a event), (event has quality spatio-temporal entity)
- 1989 South African presidential election has quality type ⇐ (1989 South African presidential election is a event), (event has quality type)
- 1989 South African presidential election has quality form of event ⇐ (1989 South African presidential election is a event), (event has quality form of event)
- 1989 South African presidential election has quality object ⇐ (1989 South African presidential election is a event), (event has quality object)
- 1989 South African presidential election has quality type of object ⇐ (1989 South African presidential election is a event), (event has quality type of object)
- 1989 South African presidential election has quality point in time ⇐ (1989 South African presidential election is a event), (event has quality point in time)
- 1989 South African presidential election has quality existence ⇐ (1989 South African presidential election is a entity), (entity has quality existence)
- 1989 South African presidential election is a entity ⇐ (event is subclass of entity), (1989 South African presidential election is a event)
- 1989 South African presidential election is a event ⇐ (presidential election is subclass of event), (1989 South African presidential election is a presidential election)
- public election is for example 1989 South African presidential election ⇐ (1989 South African presidential election is a public election), (is a is inverse of is for example)
- presidential election is for example 1989 South African presidential election ⇐ (1989 South African presidential election is a presidential election), (is a is inverse of is for example)
- South African presidential election is for example 1989 South African presidential election ⇐ (1989 South African presidential election is a South African presidential election), (is a is inverse of is for example)
- 1989 South African presidential election is a public election ⇐ (presidential election is subclass of public election), (1989 South African presidential election is a presidential election)
- 1989 South African presidential election is a presidential election ⇐ (South African presidential election is subclass of presidential election), (1989 South African presidential election is a South African presidential election)