#secret_agent__intelligence_officer__intelligence_agent__operative  a person secretly employed in espionage for a government
  supertype:  #agent.representative  a representative who acts on behalf of other persons or organizations
  subtype:  #agent_provocateur__agentprovocateur  a secret agent who incites suspected persons to commit illegal acts
  subtype:  #undercover_agent__spy  a secret agent hired by a state to obtain (military) information about its enemies or by a business to obtain industrial secrets from competitors
     subtype:  #counterspy__mole  a spy who works against enemy espionage
     subtype:  #double_agent  a spy who works for two mutually antagonistic countries
     subtype:  #espionage_agent  someone employed to spy on another country or business competitor
     subtype:  #foreign_agent__foreignagent  a spy for a foreign country
     subtype:  #infiltrator.undercover_agent  someone who takes up a position surreptitiously for the purpose of espionage
     subtype:  #sleeper.undercover_agent  a spy planted in advance for future use but not presently active
     instance:  #Mata_Hari__Margarete_Gertrud_Zelle

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