14. A system for controlling an event structure, the system comprising: a multiple-person interaction primitives recognizing unit to recognize multiple-person interaction primitives from an image, which is displayed on a display screen; and a multi-thread parser to compose an event by inference based on temporal relations using the multiple-person interaction primitives, and to determine a final event by eliminating an unnecessary event from the composed event and adding a new event in the composed event after the unnecessary event is eliminated.
14. A system for controlling an event structure, the system comprising: a multiple-person interaction primitives recognizing unit to recognize multiple-person interaction primitives from an image, which is displayed on a display screen; and a multi-thread parser to compose an event by inference based on temporal relations using the multiple-person interaction primitives, and to determine a final event by eliminating an unnecessary event from the composed event and adding a new event in the composed event after the unnecessary event is eliminated. 17. The system of claim 14 , wherein the multi-thread parser determines whether the recognized two events are combined.