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activity

An <activity> is a <possible_individual> that brings about change by causing the <event> that marks the <beginning>, or the <event> that marks the <ending> of a <possible_individual>.
An activity consists of the temporal parts of those members of <possible_individual> that participate in the activity. The participating temporal parts will be classified by the <participating_role_and_domain> that indicates the role of the temporal part in the <activity>.
EXAMPLE Pumping a fluid with a mechanical pump can be represented by an instance of <activity>.

EXPRESS specification:

ENTITY activity
SUBTYPE OF ( possible_individual);
END_ENTITY;

References (5):

Name Type Referred through Express-G
cause_of_event Entity
Attribute 'causer'
Diagram 9
involvement_by_reference Entity
Attribute 'involver'
Diagram 9
participation Entity
Attribute 'whole'
Diagram 9
possible_individual Entity
Subtype
Diagram 6
recognition Entity
Attribute 'recognizing'
Diagram 9

Inheritance graph

ENTITY activity;
ENTITY thing;
id  :  STRING;
record_copy_created  :  OPTIONAL representation_of_Gregorian_date_and_UTC_time;
record_created  :  OPTIONAL representation_of_Gregorian_date_and_UTC_time;
record_creator  :  OPTIONAL possible_individual;
record_logically_deleted  :  OPTIONAL representation_of_Gregorian_date_and_UTC_time;
why_deleted  :  OPTIONAL class_of_information_representation;
ENTITY possible_individual;
ENTITY activity;
END_ENTITY;