official: a worker who holds or is invested with an office
entity: that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
ketamine: a general anesthetic and tranquilizer (not a barbiturate) that is administered intravenously or intramuscularly; used mainly by veterinarians or for minor surgery with geriatric or pediatric patients; taken in large doses it causes hallucinations similar to those associated with the use of PCP