#Emperor  the male ruler of an empire
  supertype:  #sovereign__crowned_head__crownedhead__monarch  a nation's ruler or head of state usually by hereditary right
  instance:  #Francis_Joseph_I  #Genghis_Khan  #Haile_Selassie  #Michinomiya_Hirohito  #Justinian_the_Great  #Kublai_Khan  #Meiji_Tenno  #Montezuma_II  #Napoleon_Bonaparte  #Napoleon_III  #Shah_Jahan
  subtype:  #Empress  a woman Emperor or the wife of an Emperor
     instance:  #Catherine_I  #Catherine_II__Catherine__Catherine_the_Great
  subtype:  #Holy_Roman_Emperor  sovereign of the Holy Roman Empire
     instance:  #Charlemagne__Charles_I__Charles_the_Great  #Charles_I__Charles_II__Charles_the_Bald  #Ferdinand_I  #Ferdinand_II  #Ferdinand_III  #Emperor_Francis_II__Francis_II  #Frederick_Barbarossa__Frederick_I__Barbarossa  #Frederick_II  #Otto_I__Otho_I__Otto_the_Great
  subtype:  #Kaiser  the Holy Roman Emperors or the Emperors of Austria or Germany until 1918
     instance:  #Wilhelm_II__Kaiser_Wilhelm
  subtype:  #mikado__tenno  (archaic) the emperor of Japan; when regarded as a religious leader the emperor is called tenno
  subtype:  #Roman_Emperor__Emperor_of_Rome  sovereign of the Roman Empire
     instance:  #Marcus_Aurelius_Antoninus__Antoninus__Aurelius__Marcus_Aurelius__Marcus_Annius_Verus  #Antonius_Pius  #Augustus__Gaius_Octavianus__Gaius_Julius_Caesar_Octavianus__Octavian  #Caligula__Gaius__Gaius_Caesar  #Tiberius_Claudius_Drusus_Nero_Germanicus__Claudius__Claudius_I  #Constantine_the_Great__Constantine__Constantine_I  #Decius  #Domitian__Titus_Flavius_Domitianus  #Hadrian__Publius_Aelius_Hadrianus__Adrian  #Nero_Claudius_Caesar_Drusus_Germanicus__Nero__Lucius_Domitius_Ahenobarbus  #Marcus_Cocceius_Nerva__Nerva  #Tiberius_Claudius_Nero_Caesar_Augustus__Tiberius  #Titus_Flavius_Vespasianus__Titus  #Trajan__Marcus_Ulpius_Traianus  #Vespasian__Titus_Flavius_Sabinus_Vespasianus

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