#bleaching_agent__bleachingagent__bleach__blanching_agent__blanchingagent__whitener  an agent that makes things white or colorless
  subtype:  #benzoyl_peroxide  #bleaching_powder  #calcium_hypochlorite  #chlorine_dioxide  #chlorine_water  #Clorox  #sodium_hypochlorite
  substance of:  #bleach_liquor  #liquid_bleach
  supertype:  #agent.causal_agent  a substance that exerts some force or effect
     supertype:  #causal_agent__cause__causal_agency  any entity that causes events to happen
        supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
           supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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