is_equal_to
Use it like this:
- [ #is/_equal_to :: QualitativeValue ] or
- [ is_equal_to :: QualitativeValue ]
This ordering relation for qualitative values indicates that the subject is equal to the object.
Relation describes that: [ #has_/domain :: QualitativeValue ] ( #has_/name :: is_equal_to ) ( #has_/range :: QualitativeValue )