#precious_metal  any of the less common and valuable metals often used to make coins or jewelry
  subtype:  bullion.precious_metal  gold  silver
  supertype:  valuable  something of value; "all our valuables were stolen"
     supertype:  hoarded_wealth__hoardedwealth__treasure  accumulated wealth in the form of money or jewels etc.; "the pirates hid their treasure on a small island in the West Indies"
        supertype:  riches__wealth  an abundance of material possessions and resources
           supertype:  material_resource  assets in the form of material possessions
              supertype:  assets  anything of material value or usefulness
                 supertype:  possession  anything owned or possessed
                    supertype:  owned_entity__ownedentity
                       supertype:  entity_playing_some_role  e.g., an agent, an owner
                          supertype:  entity  something that can be "involved" in a situation
                             supertype:  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
                          supertype:  thing_that_can_be_seen_as_a_relation  usable as relation type
                             supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                                supertype:  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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