#city_district  a district of a town or city
  supertype:  district__territory  a region marked off for administrative or other purposes
  instance:  West_Berlin  Bloomsbury  Soho  Wembley  West_End  Nob_Hill  Beacon_Hill  Coney_Island  Harlem  Hell's_Kitchen  SoHo  off-Broadway  Times_Square
  part of:  city.administrative_district
  subtype:  Barbary_Coast.city_district__barbarycoast  a part of a city that is notorious for gambling dens and brothels and saloons and riotous night life (especially the waterfront of San Francisco after the gold rush of 1849); "we'll tolerate no Barbary Coast in this city!"
  subtype:  precinct  a district of a city or town marked out for administrative purposes
     subtype:  police_precinct  a precinct in which law enforcement is the responsibility of particular police force
     subtype:  voting_precinct__election_district  one of several districts into which a city or town is divided for voting; each contains one polling place
  subtype:  business_district__downtown  the commercial center of a town or city
     instance:  Tin_Pan_Alley
  subtype:  red-light_district__redlightdistrict  a district with many brothels
  subtype:  quarter  a district of a city having some distinguishing character; "the Latin Quarter"
     subtype:  ghetto  the quarter of many European cities in which Jews are required to live
     subtype:  kasbah  the quarter of many North African cities in which the citadel is located
     subtype:  medina  the ancient quarter of many North African cities
     subtype:  barrio.quarter  a Spanish-speaking quarter in a town or city (especially in the United States)
  subtype:  waterfront  the area of a city (such as a harbor or dockyard) alongside a body of water
     subtype:  seafront  the waterfront of a seaside town
     subtype:  dockyard  an establishment on the waterfront where vessels are built or fitted out or repaired
  subtype:  slum_area__slum  a district of a city marked by poverty and inferior living conditions
     subtype:  shantytown  a city district inhabited by people living in huts and shanties
     subtype:  skid_row  a city district frequented by vagrants and alcoholics and addicts
  subtype:  tenderloin__combat_zone  a city district known for its vice and high crime rate
  subtype:  turf.city_district  the territory claimed by a juvenile gang as its own
  subtype:  enterprise_zone__enterprisezone  a city district where development receives special tax advantages
  subtype:  outskirt__fringe  a part of the city far removed from the center; "they built a factory on the outskirts of the city"

No statement uses or specializes city_district; click here to add one.