Subclass of:

• crm:E4 Period

Superclass of:

• crm:E7 Activity
• crm:E63 Beginning of Existence
• crm:E64 End of Existence
• crmsci:S18 Alteration
• sdh:C19 Physical Thing Life
• sdh-so:C18 Persons' Interaction
• sdh-so:C8 Occupation (Temporal entity)
• sdh-so:C15 Participation
• sdh:C45 Physical Displacement

Scope note:

This class comprises changes of states in cultural, social or physical systems, regardless of scale, brought about by a series or group of coherent physical, cultural, technological or legal phenomena. Such changes of state will affect instances of E77 Persistent Item or its subclasses.

The distinction between an E5 Event and an E4 Period is partly a question of the scale of observation. Viewed at a coarse level of detail, an E5 Event is an ‘instantaneous’ change of state. At a fine level, the E5 Event can be analysed into its component phenomena within a space and time frame, and as such can be seen as an E4 Period. The reverse is not necessarily the case: not all instances of E4 Period give rise to a noteworthy change of state.

Examples:

• the birth of Cleopatra (E67)
• the destruction of Herculaneum by volcanic eruption in 79 AD (E6)
• World War II (E7)
• the Battle of Stalingrad (E7)
• the Yalta Conference (E7)
• my birthday celebration 28-6-1995 (E7)
• the falling of a tile from my roof last Sunday 
• the CIDOC Conference 2003 (E7)

In First Order Logic:

• E5(x) ⇒ E4(x)

Outgoing properties:

• crm:P11 had participant (participated in) → crm:E39 Actor
• crm:P12 occurred in the presence of (was present at) → crm:E77 Persistent Item
• crmsci:O13 triggers (is triggered by) → crm:E5 Event
• crmsci:O14 initializes (is initialized by) → crmsci:S16 State
• sdh:P8 effects (result from) → sdh:C1 Entity Quality
• sdh:P9 ends (is ended by) → sdh:C1 Entity Quality
• sdh:P47 has event type (is event type of) → sdh:C34 Event Type

Incoming properties:

• crm:E7 Activity → crm:P20 had specific purpose (was purpose of)
• crm:E5 Event → crmsci:O13 triggers (is triggered by)
• sdh:C2 Intentional Situation → sdh:P33 interprets (is interpreted by)
• sdh:C4 Intention → sdh:P43 has setting (is setting for)
• sdh:C64 Event Classification → sdh:P82 classifies (is classified by)
• sdh-so:C15 Participation → sdh-so:P11 is participation in (has participation)
• sdh-so:C35 Actor's Quality in Relation to an Event → sdh-so:P57 is quality in relation to (has related actor's quality)