Individual #Douala  the largest city of Cameroon
  instance of:  city
  part of:  Republic_of_Cameroon__Cameroon__Cameroun  a republic on the western coast of central Africa; was under French and British control until 1960
     part of:  Africa  the second largest continent; located south of Europe and bordered to the west by the South Atlantic and to the east by the India Ocean
        part of:  eastern_hemisphere__easternhemisphere__orient  the hemisphere that includes Eurasia and Africa and Australia

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