Scope note: This property describes the active participation of an E39 Actor in an E7 Activity. It implies causal or legal responsibility. The P14.1 in the role of property of the property allows the nature of an Actor's participation to be specified. Examples: - the painting of the Sistine Chapel (E7) carried out by Michaelangelo Buonaroti (E21) in the role of master craftsman (E55) In First Order Logic: P14 (x,y) ⊃ E7(x) P14 (x,y)⊃ E39(y) P14 (x,y) ⊃ P11(x,y) P14(x,y,z) ⊃ [P14(x,y) ∧ E55(z)]