#core_group__core__nucleus__nucleu  a small group of indispensable persons or things; "five periodicals make up the core of their publishing program"
  subtype:  #cadre  a nucleus of military personnel capable of expansion
  supertype:  #set.aggregation  a group of things of the same kind that belong together and are so used: "a set of books"; "a set of golf clubs"; "a set of teeth"
     supertype:  #aggregation__collection__accumulation__assemblage  several things grouped together
        supertype:  #group__grouping  any number of entities (members) considered as a unit
           supertype:  pm#collection  something gathering separated things (entities/situations)
              supertype:  pm#divisible_entity__divisibleentity  many classifications under this category are application-dependant
                 supertype:  pm#entity  something that can be "involved" in a situation
                    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
                 supertype:  pm#divisible_thing__divisiblething
                    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

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