Or it may be an external event that involves interaction between an entity and its environment, such as a transaction with another entity, an act of nature, theft, vandalism, a tort caused by negligence, or an accident.
An external event may be an accident.
An internal event may be an accident.
A man wearing a feathered hat sits at a table as a horse passes by.
A dead horse eating a brown dog.
The archbishops of Toledo have portraits on the wall.
There are no expectations for how long it will take to set up the system.
Two guys running.
A man without a turquoise vest