#reference_to__referenceto__regard_to__relation_to__respect_to__respectto  (usually preceded by `with') relation of delimitation; "he inquired with respect to the address"
  supertype:  #relevance__relevancy  the relation of something to the matter at hand
     supertype:  #connection.relation__connexion__connectedness__connectednes  a relation between things or events (as in the case of one causing the other or sharing features with it); "there was a connection between eating that pickle and having that nightmare"
        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

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