Scope note: This property relates an E93 Presence with an arbitrary E52 Time-Span that defines the section of the spacetime volume that this instance of E93 Presence is related to by P166 was a presence of (had presence). that is concerned by this instance of E93 Presence. Examples: In First Order Logic: P164 (x,y) ⊃ E93(x) P164 (x,y) ⊃ E52(y)