Relates an event to an active agent (a person, a computer, ... :-) )
Relates an event to a passive factor (a tool, an instrument, an abstract cause...)
Relates an event to something produced during the event---a sound, a pie, whatever...
This property provides a way to split a complex event (for example, a performance involving several musicians) into simpler ones (one event per musician).
Relates an event to a time object, classifying a time region (either instantaneous or having an extent). By using the Timeline ontology here, you can define event happening on a recorded track or on any media with a temporal extent.
Relates an event to a factor which can be described as a literal. This property should not be used as-is, but should be subsumed by other, more specific, properties (like an hypothetic :weatherCelsius, linking an event to a temperature).
An arbitrary classification of a space/time region, by a cognitive agent. An event may have actively participating agents, passive factors, products, and a location in space/time.
This ontology deals with the notion of reified events--- events seen as first-class objects. It only defines one concept: Event, which may have agents (actively participating), factors (passively participating), products, and a location in space and time. Regarding the ontological status of event tokens, they are seen as the way cognitive agents classify space/time regions