... formalisms along three lines. A first approachis to consider events as transitions between statesas in STRIPS (Fikes and Nilsson, 1971). A sec-ond one is to map events on temporal intervals and to define ... up events and time expressions. Inaddition to the identification of expressions, w e of-ten need to interpret them, for instance to com-pute the absolute time an expression refers to. Wetherefore ... our translation. To create a consistent animation, the programneeds to extract and understand who the partici-pants are and what they do. In the case of the ac-cident above, it has to: 1. Detect...