#alignment.placement  the spatial property possessed by an arrangement or position of things in a straight line or in parallel lines
  subtype:  #true  proper alignment; the property possessed by something that is in correct or proper alignment: "out of true"
  supertype:  #placement.position__arrangement  the spatial property of the way in which something is placed: "the arrangement of the furniture"; "the placement of the chairs"
     supertype:  #spatial_relation__spatialrelation__position__spatial_property__spatialproperty  the spatial property of a place where or way in which something is situated; "the position of the hands on the clock"; "he specified the spatial relations of every piece of furniture on the stage"
        supertype:  #relation  an abstraction belonging to or characteristic of two entities or parts together
           supertype:  pm#thing_that_can_be_seen_as_a_relation  usable as relation type
              supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                 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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