Individual #Yerwa-Maiduguri__Maiduguri  a city in northeastern Nigeria; an agricultural trading center
  instance of:  city
  part of:  Nigeria__Federal_Republic_of_Nigeria  a republic in West Africa on the Gulf of Guinea; gained independence from Britain in 1960; most populous African country
     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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