E1 CRM Entity
E2 Temporal Entity
E3 Condition State
E4 Period
E5 Event
E41 Appellation
E49 Time Appellation
E50 Date
E52 Time-Span
E53 Place
E59 Primitive Value
E61 Time Primitive
E62 String
E77 Persistent Item
P1 is identified by
P4 has time-span
P5 consists of
P7 took place at
P9 consists of
P10 falls within
P78 is identified by
P79 beginning is qualified by
P80 end is qualified by
P81 ongoing throughout
P82 at some time within
P83 had at least duration
P84 had at most duration
P86 falls within
Motivation for this unit has been expert knowledge in handling reasoning about temporal information, as well as interpretation of characteristic database schema elements from relevant collection management systems.