#public_utility__utility__public-service_corporation  a company that performs a public service; subject to government regulation
  supertype:  #service.company  a company or agency that performs a public service; subject to government regulation
  subtype:  #telephone_company__telephonecompany__telephone_service__telephoneservice__phone_company__phonecompany__phone_service__phoneservice  a public utility that provides telephone service
  subtype:  #power_company__powercompany__power_service__powerservice__electric_company__light_company__lightcompany  a public utility that provides electricity
  subtype:  #water_company__watercompany__waterworks  a public utility that provides water
  subtype:  #gas_company__gascompany__gas_service__gasservice  a public utility that provides gas
  subtype:  #bus_company__buscompany__bus_service__busservice  a public utility providing local transportation

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