1. An event analysis system comprising: an information database; a memory comprising: an event model comprising an event type and event attributes of the event type; an event detection engine; an event implication engine; an environment model comprising a first model entity and a focus entity, and a focus relationship from the focus entity to the first model entity; and a processor coupled to the memory which is operable to: initiate execution of the event detection engine on articles to detect an event involving the first model entity represented in the articles and apply the event model to generate an event object according to a common event structure; initiate execution of the event implication engine on the event object to: recognize that the focus relationship exists between the focus entity and the first model entity; determine an inferred event on behalf of the focus entity in view of the focus relationship responsive to the detection of the event involving the first model entity; and create a new event object from the inferred event.