#bituminous_coal__soft_coal  rich in tarry hydrocarbons; burns readily with a smoky yellow flame
  supertype:  #coal  fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
  subtype:  #cannel_coal  a bituminous coal that burns with a luminous flame
  subtype:  #sea_coal__seacoal  pulverized bituminous coal; used as a foundry facing

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