Data Property: 'P81 ongoing throughout'

comment "Scope note: This property describes the minimum period of time covered by an E52 Time-Span. Since Time-Spans may not have precisely known temporal extents, the CRM supports statements about the minimum and maximum temporal extents of Time-Spans. This property allows a Time-Span's minimum temporal extent (i.e. its inner boundary) to be assigned a value. Examples: - the time-span of the development of the CIDOC CRM (E52) ongoing throughout "1996-2002"" (en)
label "P81 ongoing throughout" (en)
notation "P81" (string)

http://erlangen-crm.org/current/P81_ongoing_throughout