Class PARALLEL-PLAN

Subclass-Of: Concurrent-plan
Axioms:
(=> (Parallel-Plan ?Self)
    (And (Minimum-Slot-Cardinality ?Self Plan-Direct-Successor 2)
         (Exists (?Y ?Z)
                 (And (Generic-Plan ?Y)
                      (Generic-Plan ?Z)
                      (Co-Exist ?Y ?Z)
                      (Plan-Direct-Successor ?Self ?Y)
                      (Plan-Direct-Successor ?Self ?Z)))))