Scope note: This property allows an E63 Beginning of Existence event to be linked to the E77 Persistent Item brought into existence by it. It allows a "start" to be attached to any Persistent Item being documented i.e. E70 Thing, E72 Legal Object, E39 Actor, E41 Appellation, E51 Contact Point and E55 Type. Examples: - the birth of Mozart (E67) brought into existence Mozart (E21) In First Order Logic: P92(x,y) ⊃ E63(x) P92(x,y) ⊃ E77(y) P92(x,y) ⊃ P12(x,y)