A.2.1:4.1 - Simple Direct Species
A simple species has only the two common participants:
JournalReviewAssignmentRelation <: U.SystemRoleAssignment
RelationSignature:
HolderSystemSlot: U.System, U.EntityRef
AssignedSystemRoleKindSlot: JournalReviewSystemRoleKindDomain, ByValue
predicate:
the admitted holder is selected to supply the contribution denoted by
the assigned system-role kind under JournalReview assignment conditions
applicability:
JournalReview-2026 assignment episodes
JournalReviewSystemRoleKindDomain is the exact local C.3 domain defined by A.2. CoolingPumpKind, ShortAssignmentKind, and arbitrary local kinds cannot fill this species’ assigned-kind slot merely because each is a U.Kind.