Class MATERIAL-OBJECT

An object perceptible to the sense of vision or touch (USN).
Subclass-Of: Object
Subclass-Partition: {Substance, Biologic-object, Submolecular-object}
The-Archetype: Category
Axioms:
(Slot-Cardinality Material-Object _Material 1)

(=> (Material-Object ?Self)
    (Exists (?A) (And (Exactly-Located ?Self ?A) (Region ?A))))