an Entity references as follows:
Scope note: This property indicates the item to which an attribute or relation is assigned. Examples: - February 1997 Current Ownership Assessment of Martin Doerr's silver cup (E13) assigned attribute to Martin Doerr's silver cup (E19) - 01 June 1997 Identifier Assignment of the silver cup donated by Martin Doerr (E15) assigned attribute to silver cup 232 (E19) In First Order Logic: P140(x,y) ⊃ E13(x) P140(x,y) ⊃ E1(y)