(<=> (Product ?X)
(Or (Exists (?Sale) (Product-Sold ?Sale ?X))
(Exists (?For-Sale) (Product-For-Sale ?For-Sale ?X))))
(Inherited-Facet-Value Slot-Value-Type
For-Sale
Product-For-Sale
Eo-Entity)
(Inherited-Facet-Value Slot-Cardinality For-Sale Product-For-Sale 1)