A newspaper is a periodical publication that may be published as frequently as once a day.
(Subclass-Partition Periodical-Publication
(Setof Journal Magazine Newspaper))
(Inherited-Facet-Value Slot-Value-Type
Newspaper-Article-Reference
Ref.Document
Newspaper)
(=> (Newspaper-Article-Reference ?Ref)
(And (Value-Type ?Ref Ref.Document Newspaper)
(Value-Cardinality ?Ref Ref.Newspaper-Name 1)
(Same-Values ?Ref Ref.Magazine-Name Ref.Periodical)
(Value-Cardinality ?Ref Ref.Month 1)
(Value-Cardinality ?Ref Ref.Day 1)
(Value-Type ?Ref Ref.Address City-Address)))