#Apollo_program  a program of space flights undertaken by US to land a man on the moon; "the first lunar landing was achieved by the Apollo program on July 20, 1969"
  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:  collection  something gathering separated things (entities/situations)
                    supertype:  divisible_entity__divisibleentity  many classifications under this category are application-dependant
                       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:  divisible_thing__divisiblething
                          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

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