an Entity references as follows:
Scope note: This property describes an item or items that are regarded as a reason for carrying out the E7 Activity. For example, the discovery of a large hoard of treasure may call for a celebration, an order from head quarters can start a military manoeuvre. Examples: - the resignation of the chief executive (E7) was motivated by the collapse of Swiss Air (E68). - the coronation of Elizabeth II (E7) was motivated by the death of George VI (E69) FOL: P17(x,y) ⊃ E7(x) P17(x,y) ⊃ E1(y) P17 (x,y) ⊃ P15(x,y)