This property specifies that the temporal extent of the domain instance A of E2 Temporal Entity ends definitely before the start of the temporal extent of the range instance B of E2 Temporal Entity.
In other words, if A = [Astart, Aend] and B = [Bstart, Bend], we mean Aend < Bstart is true.
This property is part of the set of temporal primitives P173 – P176, P182 – P185.
This property corresponds to the following Allen temporal relation (Allen, 1983) : {before}.
This property is transitive.
![](data:image/png;base64,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)
Figure 18: Temporal entity A ends before the start of temporal entity B. Here A is longer than B
![](data:image/png;base64,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)
Figure 19: Temporal entity A ends before the start of temporal entity B. Here A is shorter than B