#rank.line  a row or line of people (especially soldiers or police) standing abreast of one another; "the entrance was guarded by ranks of policemen"
  member:  end_man
  supertype:  line  a formation of people or things one beside another; "the line of soldiers advanced with their bayonets fixed"; "they were arrayed in line of battle"; "the cast stood in line for the curtain call"
     supertype:  formation_acting_as_a_unit__formation  an arrangement of people or things acting as a unit; "a defensive formation"; "a formation of planes"
        supertype:  arrangement  an orderly grouping (of things or persons)
           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

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