Domain:

crm:E2 Temporal Entity

Range:

crm:E52 Time-Span

Quantification:

1,n:1,1

Scope note:

This property describes the temporal confinement of an instance of an E2 Temporal Entity.

The related E52 Time-Span is understood as the real Time-Span during which the phenomena were active, which make up the temporal entity instance. It does not convey any other meaning than a positioning on the “time-line” of chronology. The Time-Span in turn is approximated by a set of dates (E61 Time Primitive). A temporal entity can have in reality only one Time-Span, but there may exist alternative opinions about it, which we would express by assigning multiple Time-Spans. Related temporal entities may share a Time-Span. Time-Spans may have completely unknown dates but other descriptions by which we can infer knowledge.

Examples:

the Yalta Conference (E7) has time-span Yalta Conference time-span (E52)

In First Order Logic:

• P4(x,y) ⇒ E2(x)
• P4(x,y) ⇒ E52(y)