(subclass DayTime TimeInterval) | Merge.kif 8857-8857 | Day time is a subclass of time interval |
(subclass Afternoon DayTime) | Merge.kif 8788-8788 | Afternoon is a subclass of day time |
(subclass Morning DayTime) | Merge.kif 8803-8803 | Morning is a subclass of day time |