Complement equivalent to Complement

Ontology(<http://www.semanticweb.org/wmilnor/ontologies/2018/3/ClassNotationAnalysisRow214>
Import(<http://nomagic.com/ConceptModeler/ConceptModelingSupportLibrary/>)

Declaration(Class(:A))
Declaration(Class(:B))

EquivalentClasses(ObjectComplementOf(:A) ObjectComplementOf(:B))
)