text: <unk><unk>  are any materials in the<unk> phase of matter that can readily undergo combustion in the presence of a source of ignition under standard circumstances, i.e. without:
  Artificially changing variables such as pressure or density; or
  Adding accelerants.
option_0: HAZMAT Class 4 Flammable Solids
option_1: HAZMAT Class 3 Flammable Liquids
option_2: HAZMAT Class 1 Explosives
option_3: HAZMAT Class 8 Corrosive Substances
option_4: Toxic Adenoma classification
option_5: Farmer's lung epidemiology and demographics
option_6: ICD-9-CM Volume 3
option_7: Toxic Adenoma other imaging findings