dl#abstract_or_perdurant__AB_or_PD
  subtype:  p{perdurant abstract}
  supertype:  entity  a category from DOLCE or generalized by a category from DOLCE
     supertype:  individual__particular___supertype_of_1st_order_types  all individuals (for concepts or relations) are implicitely or explicitely instance of that type
        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

1 statement is about an indirect instance of abstract_or_perdurant (hour__hr__60_minutes): graph1_on_alteration
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