The predicate agent physically acted on is used to describe an event in which a living organism is acted on by some external agency. (agent physically acted on EVENT ORG) means that ORG is a living organism (i.e., an organism) that is being affected in EVENT. ORG itself may be intentionally participating in EVENT (e.g., a person voluntarily getting a haircut) or not (e.g., an animal hit by a car). Either way, the organism ORG is not an active primary `doer' of EVENT. This predicate is appropriately used to identify actors who undergo (instances of) drug therapy or getting hurt. Note an important contrast with bodily doer (q.v.): agent physically acted on is for events that merely happen to the body, as opposed to actions the body does. Because the body of an organism is an active `doer' in its instances of physiological condition, including any injury (which is the physical process of a body sustaining an injury and responding by healing or deteriorating), an organism is related to events of those kinds with bodily doer rather than agent physically acted on. By contrast, organisms involved in instances of drug therapy (which refers to the effect of a drug on the patient) or getting hurt (which refers to the event in which an organism gets injured, rather than the process of its being in an injured and hopefully healing state) should be related to events of those types with agent physically acted on.