Scope note: This class comprises 4 dimensional point sets (volumes) in physical spacetime regardless its true geometric form. They may derive their identity from being the extent of a material phenomenon or from being the interpretation of an expression defining an extent in spacetime. Intersections of instances of E92 Spacetime Volume, Place and Timespan are also regarded as instances of E92 Spacetime Volume. An instance of E92 Spacetime Volume is either contiguous or composed of a finite number of contiguous subsets. Its boundaries may be fuzzy due to the properties of the phenomena it derives from or due to the limited precision up to which defining expression can beÂ identifiedÂ with a real extent in spacetime. The duration of existence of an instance of a spacetime volume is trivially its projection on time. Examples:  theÂ spacetimeÂ VolumeÂ ofÂ theÂ EventÂ ofÂ CeasarsÂ murderÂ  theÂ spacetimeÂ VolumeÂ whereÂ andÂ whenÂ theÂ carbonÂ 14Â datingÂ ofÂ theÂ "SchoeningerÂ SpeerÂ II"Â inÂ 1996 Â tookÂ placeÂ  theÂ spatioâtemporalÂ trajectoryÂ ofÂ theÂ H.M.S.Â VictoryÂ fromÂ itsÂ buildingÂ toÂ itsÂ actualÂ location  theÂ spacetimeÂ volumeÂ definedÂ byÂ aÂ polygonÂ approximatingÂ theÂ DanubeÂ riverÂ floodÂ inÂ AustriaÂ betweenÂ 6thÂ andÂ 9thÂ ofÂ AugustÂ 2002
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