Class DISJUNCTION

Subclass-Of: Logsent
Axioms:
(<=> (Disjunction ?X)
     (Exists (?Plist)
             (And (List ?Plist)
                  (>= (Length ?Plist) 1)
                  (=> (Item ?P ?Plist) (Sentence ?P))
                  (= ?X (Cons 'Or ?Plist)))))