#medical_relation__medicalrelation  the professional relation between a health care professional and a patient
  subtype:  doctor-patient_relation  nurse-patient_relation
  supertype:  professional_relation  the relation that exists when one person requests and is granted professional help from a qualified source
     supertype:  social_relation  a relation between living organisms (especially between people)
        supertype:  relation  an abstraction belonging to or characteristic of two entities or parts together
           supertype:  thing_that_can_be_seen_as_a_relation  usable as relation type
              supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                 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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