Temporal Closure in an Annotation Environment

News articles typically present a story that develops over time. Events and times are introduced and the reader understands what the sequence of events is. Simple questions like “What happened after the kidnapping?” can only be answered if information about events and the temporal relations between events is available and a document needs to be annotated automatically or manually to provide this information. This article focuses on how a temporal closure component can be embedded in a temporal annotation environment. Temporal closure takes known temporal relations in a text and derives new implied relations from them, in eect making explicit what was implicit. A temporal