#joy__delight__pleasure  something or someone that provides pleasure; a source of happiness; "a joy to behold"; "the pleasure of his company"; "the new car is a delight"
  supertype:  positive_stimulus  a stimulus with desirable consequences
     supertype:  stimulus__stimulation__stimulant__input  any stimulating information or event; acts to arouse action
        supertype:  information  knowledge acquired through study or experience or instruction
           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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