. "In the activity (Actuation) of automatically closing a window if the temperature in a room drops below 20 degrees Celsius, the property on which the Actuator acts upon is the state of the window as it changes from being open to being closed. "@en . . . . "Relation between an Actuation and the property of a FeatureOfInterest it is acting upon."@en . . "Relation between an Actuation and the property of a FeatureOfInterest it is acting upon."@en . . "acts on property"@en . .