#Gemini_program  a program of space flights undertaken by US in 1965 and 1966; "under the Gemini program each crew had two astronauts"
  supertype:  #space_program__spaceprogram  a technological program intended to explore outer space
     supertype:  #program__programme  a system of projects or services intended to meet a public need; "he proposed an elaborate program of public works"; "working mothers rely on the day care program"
        supertype:  #system_of_rules__system  a complex of methods or rules governing behavior; "they have to operate under a system they oppose"; "that language has a complex system for indicating gender"
           supertype:  #system  a group of independent but interrelated elements comprising a unified whole; "a vast system of production and distribution and consumption keep the country going"
              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

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