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.